24	20	4

24 (twenty-four) is the natural number following 23 and preceding 25. "Twenty" redirects here For the village in England, see Twenty Lincolnshire. In mathematics Four is the smallest Composite number, its proper Divisors being and. In Mathematics, a natural number (also called counting number) can mean either an element of the set (the positive Integers or an This article is about the number 23 For the year see 23. For the movies see 23 (film and The Number 23. 25 ( twenty-five) is the Natural number following 24 and preceding 26.

The SI prefix for 10²⁴ is yotta (Y), and for 10^-24 (i. An SI prefix (also known as a metric prefix) is a name or associated symbol that precedes a unit of measure (or its symbol to form a Decimal multiple or yotta- (symbol Y) is an SI prefix in the SI ( System of units) denoting 1024 or 1 000 000 000 000 000 000 000 000 e. , the reciprocal of 10²⁴) yocto (y). yocto- (symbol y) is an SI prefix in the SI system of units denoting a factor of 10−24 or 0 These numbers are the largest and smallest number to receive an SI prefix to date.

← 20 21 22 23 24 25 26 27 28 29 → List of numbers — Integers 0 10 20 30 40 50 60 70 80 90 →
Cardinal	24 twenty-four
Ordinal	24th twenty-fourth
Factorization
Divisors	1, 2, 3, 4, 6, 8, 12, 24
Roman numeral	XXIV
Binary	11000
Hexadecimal	18

Contents 1 In mathematics 2 In science 3 In religion 4 In music 5 In sports 6 In other fields 7 Historical years 8 Famous 24-year-olds 9 References

In mathematics

24 is the factorial of 4 and a composite number, being the first number of the form 2³q, where q is an odd prime. 19 ( nineteen) is the Natural number following 18 and preceding 20. "Twenty" redirects here For the village in England, see Twenty Lincolnshire. 21 ( twenty-one) is the Natural number following 20 and preceding 22. 22 ( twenty-two) is the Natural number following 21 and preceding 23. This article is about the number 23 For the year see 23. For the movies see 23 (film and The Number 23. 25 ( twenty-five) is the Natural number following 24 and preceding 26. 26 ( twenty-six) is the Natural number following 25 and preceding 27. 27 ( twenty-seven) is the Natural number following 26 and preceding 28. 28 ( twenty-eight) is the Natural number following 27 and preceding 29. 29 ( twenty-nine) is the Natural number following 28 and preceding 30. 30 ( thirty) is the Natural number following 29 and preceding 31. This is a list of articles about Numbers ( not about Numerals. The integers (from the Latin integer, literally "untouched" hence "whole" the word entire comes from the same origin but via French "Twenty" redirects here For the village in England, see Twenty Lincolnshire. 30 ( thirty) is the Natural number following 29 and preceding 31. 40 ( forty) is the Natural number following 39 and preceding 41. This article discusses the number fifty. For the year 50 CE see 50. 60 ( sixty) is the Natural number following 59 and preceding 61. 70 ( seventy) is the Natural number following 69 and preceding 71. 80 ( eighty) is the Natural number following 79 and preceding 81. 90 ( ninety) is the Natural number preceded by 89 and followed by 91. This article describes cardinal numbers in mathematics For cardinals in linguistics see Names of numbers in English. In Set theory, an ordinal number, or just ordinal, is the Order type of a Well-ordered set. In Mathematics, factorization ( also factorisation in British English) or factoring is the decomposition of an object (for In Mathematics, a divisor of an Integer n, also called a factor of n, is an integer which evenly divides n without Roman numerals are a Numeral system originating in ancient Rome, adapted from Etruscan numerals. The binary numeral system, or base-2 number system, is a Numeral system that represents numeric values using two symbols usually 0 and 1. In Mathematics and Computer science, hexadecimal (also base -, hexa, or hex) is a Numeral system with a Definition The factorial function is formally defined by n!=\prod_{k=1}^n k A composite number is a positive Integer which has a positive Divisor other than one or itself In Mathematics, a prime number (or a prime) is a Natural number which has exactly two distinct natural number Divisors 1

It is the smallest number with exactly eight divisors: 1, 2, 3, 4, 6, 8, 12, and 24. In Mathematics, a divisor of an Integer n, also called a factor of n, is an integer which evenly divides n without Mathematics For any number x: x ·1 = 1· x = x (1 is the multiplicative identity In mathematics Two has many properties in Mathematics. An Integer is called Even if it is divisible by 2 ---- In mathematics Three is the first odd Prime number, and the second smallest prime In mathematics Four is the smallest Composite number, its proper Divisors being and. In mathematics Six is the second smallest Composite number, its proper Divisors being 1, 2 and 3. In mathematics 8 is a Composite number, its Proper divisors being 1, 2, and 4. It is a highly composite number, having more divisors than any smaller number. A highly composite number ( HCN) is a positive Integer with more Divisors than any smaller positive integer Adding up all the proper divisors of 24 except 4 and 8 gives 24, hence 24 is a semiperfect number. In Mathematics, a semiperfect number or pseudoperfect number is a Natural number n that is equal to the sum of all or some of its Proper

Subtracting one from any of its divisors (except 1 and 2, but including itself) yields a prime number. In Mathematics, a prime number (or a prime) is a Natural number which has exactly two distinct natural number Divisors 1 24 is the largest number with this property, for to have this property a number cannot be divisible by a prime greater than three, nor can it be divisible by 9 or 16.

24 has an aliquot sum of 36 and the aliquot sequence (24,36,55,17,1,0). In Mathematics, and specifically in Number theory, a divisor function is an Arithmetical function related to the Divisors of an Integer In Mathematics, an aliquot sequence is a recursive sequence in which each term is the sum of the Proper divisors of the previous term

There are 10 solutions to the equation φ(x) = 24, namely 35, 39, 45, 52, 56, 70, 72, 78, 84 and 90. In Number theory, the totient \varphi(n of a Positive integer n is defined to be the number of positive integers less than or equal to This is more than any integer below 24, making 24 a highly totient number. A highly totient number k is an integer that has more solutions to the equation φ( x) = k, where φ is Euler's totient function, than any integer

24 is a nonagonal number. A nonagonal number or enneagonal number is a Figurate number that represents a Nonagon. This number is also the sum of a twin prime (11 + 13). A twin prime is a Prime number that differs from another prime number by Two. It is a Harshad number and a semi-meandric number. A Harshad number, or Niven number, is an Integer that is divisible by the sum of its digits in a given number base. In Mathematics, a meander or closed meander is a self-avoiding Closed curve which intersects a line a number of times

Together with the number one, 24 is one of the few numbers n for which the sum of μ(d)d² over the divisors d of n is equal to itself.

The product of any four consecutive numbers is divisible by 24. This is because, among any four consecutive numbers, there must be two even numbers, one of which is a multiple of four, and there must be a multiple of three. ^[1]

In 24 dimensions there are 24 even positive definite unimodular lattices, called the Niemeier lattices. In Mathematics, a unimodular lattice is a lattice of Discriminant 1 or &minus1 In Mathematics, a Niemeier lattice is one of the 24 Positive definite even Unimodular lattices of rank 24which were classified by. One of these is the exceptional Leech lattice which has many surprising properties; due to its existence, the answers to many problems such as the kissing number problem and sphere packing are known in 24 dimensions but not in many lower dimensions. In Mathematics, the Leech lattice is a particular lattice &Lambda in 24-dimensional Euclidean space, '''R'''24 discovered by In Geometry, the kissing number is the maximum number of Spheres of radius 1 that can simultaneously touch the unit sphere in n -dimensional Euclidean In Mathematics, sphere packing problems are problems concerning arrangements of non-overlapping identical Spheres which fill a space The Leech lattice is closely related to the equally nice length-24 binary Golay code and the Steiner system S(5,8,24) and the Mathieu group M₂₄. In Mathematics and Computer science, a binary Golay code is a type of Error-correcting code used in Digital communications The binary Golay code In combinatorial Mathematics, a Steiner system (named after Jakob Steiner) is a type of Block design. In the Mathematical field of Group theory, the Mathieu groups, named after the French mathematician Émile Léonard Mathieu, are five finite simple One construction of the Leech lattice is possible because of the remarkable fact that 1²+2²+3²+. In Mathematics, the Leech lattice is a particular lattice &Lambda in 24-dimensional Euclidean space, '''R'''24 discovered by . . +24² =70² is a perfect square; 24 is the only integer greater than 1 with this property. This article refers to the REM live recording For the mathematical term see Perfect square. These properties of 24 are related to the fact that the number 24 also appears in several places in the theory of modular forms; for example, the modular discriminant is the 24th power of the Dedekind eta function. In Mathematics, a modular form is a (complex Analytic function on the Upper half-plane satisfying a certain kind of Functional equation and In Mathematics, Weierstrass's elliptic functions are Elliptic functions that take a particularly simple form (cf Jacobi's elliptic functions) they are named The Dedekind eta function, named after Richard Dedekind, is a function defined on the Upper half-plane of Complex numbers whose imaginary part is positive

The Barnes-Wall lattice contains 24 lattices. In mathematics the Barnes–Wall lattice &Lambda16 discovered by, is the 16-dimensional positive-definite even integral lattice of discriminant 28 In Mathematics, especially in Geometry and Group theory, a lattice in R n is a Discrete subgroup of

24 is the highest number n with the property that every element of the group of units (Z/nZ)^* of the commutative ring Z/nZ, apart from the identity element, has order 2; thus the multiplicative group (Z/24Z)^* = {1,5,7,11,13,17,19,23} is isomorphic to the additive group (Z/2Z)³. In Mathematics, a unit in a ( Unital) ring R is an invertible element of R, i In Modular arithmetic the set of Congruence classes Relatively prime to the modulus n form a group under multiplication called the multiplicative In Ring theory, a branch of Abstract algebra, a commutative ring is a ring in which the multiplication operation has the commutative property In Mathematics, modular arithmetic (sometimes called modulo arithmetic, or clock arithmetic) is a system of Arithmetic for Integers In Abstract algebra, a group isomorphism is a function between two groups that sets up a one-to-one correspondence between the elements of the groups in This fact plays a role in monstrous moonshine. In Mathematics, monstrous moonshine is a term devised by John Horton Conway and Simon P

The 24-cell, with 24 octahedral cells and 24 vertices, is a self-dual convex regular 4-polytope; it has no good 3-dimensional analogue. Constructions A 24-cell is given as the Convex hull of its vertices In Geometry, polyhedra are associated into pairs called duals, where the vertices of one correspond to the faces of the In Mathematics, a convex regular 4-polytope (or Polychoron) is 4- Dimensional Polytope which is both regular and convex

In science

• The atomic number of chromium

In religion

• The number of books in the Tanakh

In music

There are 24 major and minor keys in Western tonal music, not counting enharmonic equivalents. See also List of elements by atomic number In Chemistry and Physics, the atomic number (also known as the proton Chromium (ˈkroʊmiəm is a Chemical element which has the symbol Cr and Atomic number 24 See also Old testament, Septuagint, Targum, Peshitta The Tanakh (תַּנַ"ךְ (taˈnax or; also Tenakh or Tenak is Tonality is a system of Music in which specific hierarchical pitch relationships are based on a key "center" or tonic. In modern Music and notation, an enharmonic equivalent is a Note ( enharmonic tone) interval ( enharmonic interval) or Therefore, for collections of pieces written in each key, the number of pieces in such a collection; e. g. , Chopin's 24 Preludes

In sports

• The number of Baseball Hall of Famer Willie Mays, retired by the San Francisco Giants. The Preludes Op 28, by Frédéric Chopin, are a set of 24 short pieces written for the Piano, one in each key, originally published in 1839 Willie Howard Mays Jr (born May 6 1931 is a retired American Baseball player who played the majority of his career with the New York and San Francisco Giants The San Francisco Giants are a Major League Baseball team based in, that currently play in the National League West Division.
• The number of Baseball Hall of Famer Tony Perez, retired by the Cincinnati Reds. Atanasio Pérez Rigal, more commonly known as Tony Pérez (born May 14, 1942 in Ciego de Ávila, Cuba) is a former player in The Cincinnati Reds are a Major League Baseball team based in Cincinnati Ohio, USA
• The number of former MLB All-Star Jimmy Wynn, retired by the Houston Astros. The Major League Baseball All-Star Game, also popularly known as the "Midsummer Classic" is an annual Baseball game between players from the National League James Sherman Wynn (born March 12 1942 in Hamilton Ohio) nicknamed "The Toy Cannon" is a former Center fielder in Major League The Houston Astros are a Professional baseball team based in Houston Texas.
• The car number of 4-time NASCAR Nextel Cup Series champion Jeff Gordon since the 1992 Hooters 500. The National Association for Stock Car Auto Racing ( NASCAR) is the largest sanctioning body of Stock cars in the United States. Jeffery Michael Gordon Previously, another Gordon-- Cecil Gordon--had driven the 24 car. Cecil Gordon (born June 21, 1941 in Horse Shoe North Carolina) was a NASCAR driver
• The jersey number of MLB All-Star and Gold Glove winner, Grady Sizemore from the Cleveland Indians
• The jersey number of MLB All-Star, Manny Ramírez from the Boston Red Sox
• The jersey number of MLB All-Star, Robinson Cano for the 2007 season. Grady Sizemore III (born August 2, 1982 in Seattle, Washington) On June 27, 2002, Sizemore was part of a six-player The Cleveland Indians are a professional baseball team based in Cleveland, Ohio, United States. Manuel "Manny" Aristides Ramírez Onelcida (born May 30 1972 in Santo Domingo, Dominican Republic) is a Dominican-American professional The Boston Red Sox are a Professional baseball team based in Boston Massachusetts, and are the reigning (2007 World Series Champions. Robinson José Canó (kaˈno born October 22, 1982, in) is a Second baseman in Major League Baseball, who currently plays for the New
• The current jersey number of NBA star, Kobe Bryant (from the 2006-07 season, onwards)
• The jersey number of NFL Stars, Champ Bailey, Cadillac Williams, and Marion Barber
• The number of teams that participated in each FIFA World Cup finals tournament between 1982 and 1994. Kobe Bean Bryant (born) is an American All-Star Shooting guard Roland "Champ" Bailey (born June 22, 1978 in Folkston, Georgia) is an American football player starting at Cornerback "Cadillac Williams" redirects here For the jazz trumpeter also known as Cadillac Williams see Nelson Williams. Marion Barber III (born June 9, 1983 in Plymouth Minnesota) is an American football Running back for the Dallas Cowboys The FIFA World Cup, occasionally called the Football World Cup, but usually referred to simply as the World Cup, is an international Association football
• The jersey number of NHL hall of famer Bernie Federko, retired by the St. Louis Blues
• The number of accepted runners in the Melbourne Cup

In other fields

24 is also:

• The number of bits a computer needs to represent truecolour images (for a maximum of 16,777,216 colours). Bernard Allan Federko (born May 12 1956 in Foam Lake, Saskatchewan, Canada is a retired Professional The St Louis Blues are a professional Ice hockey team based in St The Melbourne Cup is Australia 's major annual Thoroughbred horse race. A bit is a binary digit, taking a value of either 0 or 1 Binary digits are a basic unit of Information storage and communication See also True Colors (disambiguation. Truecolor is a method of representing and storing graphical image information (especially in computer (But greater numbers of bits provide more accurate colors. "Truecolor" is one of many possible color representations. )
• The number of a broadcast television channel
• The number of cans or bottles in a beverage case. Terrestrial television is a term which refers to modes of television broadcasting which do not involve satellite transmission A case of some Merchandise is a collection of items packaged together
• The number of Carats representing 100% pure gold. The KARAT (abbreviation "K" or 'Kt' or "KP" for Karat Plumb is a measure of the Purity of Gold Alloys. Gold (ˈɡoʊld is a Chemical element with the symbol Au (from its Latin name aurum) and Atomic number 79
• The number of cycles in the Chinese solar year. The Chinese calendar is lunisolar, incorporating elements of a Lunar calendar with those of a Solar calendar.
• The number of frames per second at which motion picture film is usually projected.
• The number of hours in a day. The hour (symbol h) is a unit of Time. It is not an SI unit but is accepted for use with the SI A day (symbol d is a unit of Time equivalent to 24 Hours and the duration of a single Rotation of planet Earth with respect to the
• The number of letters in both the modern and classical Greek alphabet. The Greek alphabet (Ελληνικό αλφάβητο is a set of twenty-four letters that has been used to write the Greek language since the late 9th or early For the latter reason, also the number of chapters or "books" into which Homer's Odyssey and Iliad came to be divided. Homer ( Ancient Greek:, Homēros) is a legendary ancient Greek epic Poet, traditionally said to be the author of the epic poems the The Odyssey ( Greek: Ὀδύσσεια or Odússeia) is one of two major ancient Greek epic poems attributed to Homer. The Iliad ( Greek: Ἰλιάς (Ancient Ιλιάδα (Modern is together with the Odyssey, one of two ancient

• 24, television series starring Kiefer Sutherland. 24 is an Emmy and Golden Globe award-winning American action Drama Television series. Kiefer William Frederick Dempsey George Rufus Sutherland He has Scottish ancestry from both parents and is the grandson of Canadian politician Tommy Douglas. Each 24-episode season of the show covers 24 hours.
• The number of points on a backgammon board. Backgammon is a Board game for two players in which the playing pieces are moved according to the roll of Dice.
• When pronounced "two-four", a 24-pack of beer (Canadianism). Beer is the world's oldest and most widely consumed Alcoholic beverage and the third most popular drink overall after water and tea
• A children's mathematical game involving the use of any of the 4 standard operations on 4 numbers on a card to get 24 (see Math 24)
• "24", a song by Welsh musician Jem
• The maximum number of Knight Companions in the Order of the Garter
• The Twenty-fourth Amendment to the United States Constitution is one of the Civil Rights-era amendments, abolishing poll tax requirements in federal elections. The 24 Game is a Mathematical game in which the object is to find a way to manipulate four Integers so that the end result is 24 Jemma Griffiths (born June 18, 1975 in Penarth, Wales) better known as Jem, is a Welsh Singer-songwriter known The Most Noble Order of the Garter is an Order of chivalry, or Knighthood, originating in Medieval England, and presently bestowed on recipients Amendment XXIV (the Twenty-fourth Amendment) of the United States Constitution prohibits both Congress and the states from conditioning the right to vote in The American Civil Rights Movement (1955–1968 refers to the reform movements in the United States aimed at abolishing racial discrimination against African
• The designation of US Interstate 24, a freeway that runs from Tennessee to Illinois. The United States of America —commonly referred to as the Interstate 24 (I-24 is an Interstate highway in the eastern United States. Tennessee ( is a state located in the Southern United States. The State of Illinois ( roughly ill-i-NOY is a state of the United States of America, the 21st to be admitted to the Union. Also many other roads called Route 24
• 24 is considered an unlucky number in Cantonese culture because its pronounication is similar to that of "easy to die". Route 24, or Highway 24, can refer to Canada Alberta Highway 24 British Columbia Highway 24 Manitoba For this reason, many buildings skip this floor number. The same goes for 13, 34, 44, etc.
• In Brazil, the number 24 holds a strong popular association with homosexuality, as there is a popular betting game, the Jogo do Bicho (Animal Game) in which 24 is the "deer" number. Homosexuality refers to sexual behavior with or attraction to people of the same sex or to a Homosexual orientation. The Brazilian word for deer, "veado", is also used as a depreciative slang term for homosexual, although the latter is sometimes spelled with an 'i' as opposed to an 'e'
• #24 is a recurring character on The Venture Bros.
• A Straight Edge symbol, for X is the 24th letter of the alphabet

Historical years

24 A.D., 24 B.C., 1924, 2024, etc. Monarch henchmen, in particular the recurring characters #21 and #24, are supporting characters of the Adult Swim program The The Venture Bros (alternatively The Venture Brothers) is an American Animated television series airing as part of Adult Swim Straight Edge refers to a lifestyle that started within the Hardcore punk subculture whose adherents make a commitment to refrain from using alcohol, Tobacco Year 24 was a Leap year starting on Saturday (link will display the full calendar of the Julian calendar. Year 24 BC was a Common year starting on Thursday (link will display the full calendar of the Julian calendar. Year 1924 ( MCMXXIV) was a Leap year starting on Tuesday (link will display the full calendar of the Gregorian calendar. 2024 ( MMXXIV) will be a Leap year starting on Monday of the Gregorian calendar.

Famous 24-year-olds

Alex Wotherspoon, Apprentice series 4 finalist, is apparently 24.

References

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