This article is about the number fifteen. For the year, see 15.
Quick facts for kids
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Cardinal | fifteen | |||
Ordinal | 15th (fifteenth) |
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Factorization | 3 · 5 | |||
Divisors | 1, 3, 5, 15 | |||
Roman numeral | XV | |||
Binary | 11112 | |||
Ternary | 1203 | |||
Quaternary | 334 | |||
Quinary | 305 | |||
Senary | 236 | |||
Octal | 178 | |||
Duodecimal | 1312 | |||
Hexadecimal | F16 | |||
Vigesimal | F20 | |||
Base 36 | F36 | |||
Hebrew | ט"ו (Tet Vav) |
Fifteen is a number. It is between fourteen and sixteen, and is an odd number. It is divisible by 1, 3, 5, and 15.
In Roman numerals, 15 is written as XV.
Images for kids
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Fifteen total individuals in the mollusk species Donax variabilis comprise the entire coloration and patterning in their phenotypes.

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15 (number) Facts for Kids. Kiddle Encyclopedia.