24 (number)

Twenty-four redirects here. This article is relating to the number 24. For the year, to see 24.

24 (twenty-four) is the Entier naturalness which follows 23 and which precedes 25.

In Mathematical, 24 is the Factorielle of 4 and a made up Nombre; its Diviseur S clean is 1, 2, 3, 4, 6, 8 and 12, which justifies that 24 is a highly made up Nombre. The numbers obtained, by withdrawing one of each one of its dividers (except for 1 and 2, but by including itself), are all first; 24 is the greatest number having this property.

There are ten solutions of the equation \ varphi (X) = 24 \, where \ varphi \, is the function Indicatrice of Euler. They are the entireties 5, 39, 45, 52, 56, 70, 72, 78, 84 and 90. There are more solutions of this equation than for any other entirety lower than 24, which makes of him a highly indicating Nombre.

24 is a Nombre ennéagonal. This number is also equal to the sum of two Prime numbers twins (11 + 13). It is moreover a Nombre Harshad and a number semi-méandrique.

Other fields

The twenty-fourth the moon of Jupiter is Pasiphaé.

twenty-four is:

  • the Atomic number of the chromium, a Metal of transition.
  • the number of hours in a Day (24h00 = Midnight).
  • the number of cycles in the Chinese solar year.
  • the number of books in the Tanakh.
  • the number of Tooth S in the mouth of a human child.
  • the number of Carat S of the pure Gold.
  • the number of letters in the Greek alphabets modern and traditional. Compared to the last reason, the number of chapters or “books” with which one can divide the Odyssée and of the Iliade of Homère.
  • the full number of minor and major keys in the tonal Music Western, by not counting the equivalents enharmonic. Consequently, for the collections of parts written in each key, the number of parts in such a collection; c.a.d., the 24 preludes of Chopin.
  • the n° of the project of French highway which starts from Amiens to go to the Belgian border .
  • the n° of the French Department, the the Dordogne.
  • the number of years of Marriage of the weddings of Satin.
  • historical Years: -24, 24 or 1924.
  • In Quebec: A case of 24 means beer case.

Zh-yue: 24

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