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20 (number)

← 19 20 21 →
Cardinal twenty
Ordinal 20th
(twentieth)
Factorization 22× 5
Divisors 1, 2, 4, 5, 10, 20
Roman numeral XX
Binary 101002
Ternary 2023
Quaternary 1104
Quinary 405
Senary 326
Octal 248
Duodecimal 1812
Hexadecimal 1416
Vigesimal 1020
Base 36 K36

20 (twenty) is the natural number following 19 and preceding 21. A group of twenty units may also be referred to as a score.


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