27 (number)

From Academic Kids

27 (twenty-seven) is the natural number following 26 and preceding 28. Twenty-seven is the smallest positive integer requiring four syllables to name in English, though it can be unambiguously defined in just two: "three cubed". It is the first composite number not divisible by any of its digits.

<< 20 21 22 23 24 25 26 27 28 29 >>

Template:Numbers (0 E2)

Cardinal twenty-seven
Ordinaltwenty-seventh
Factorization<math>3^3 \,\!<math>
Roman numeralXXVII
Binary11011
Hexadecimal1B
Contents

In mathematics

Twenty-seven is a perfect cube, being 33 = 3 × 3 × 3. 27 is 3↑↑2 (using Knuth's up-arrow notation). It is also a decagonal number. It is the magic result of a prime reciprocal magic square of the multiples of 1/7. It is a Smith number and a Harshad number. It is the twenty-eighth (and twenty-ninth) digit in π. (3.141592653589793238462643383279502884197169399375105820974944592).

A 10,000-day-old person is 27 years old (and some months).

In astronomy

In other fields

Twenty-seven is also:

External link

eo:Dudek sep fr:27 (nombre) ko:27 ia:27 it:Ventisette he:27 (מספר) nl:27 (getal) ja:27 no:27 (tall) pt:Vinte e sete sl:27 (število) sv:27 (tal) zh:27

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