20 (number)

← 19 20 21 →
Cardinaltwenty
Ordinal20th
(twentieth)
Numeral systemvigesimal
Factorization22 × 5
Divisors1, 2, 4, 5, 10, 20
Greek numeralΚ´
Roman numeralXX, xx
Binary101002
Ternary2023
Senary326
Octal248
Duodecimal1812
Hexadecimal1416
ArmenianԻ
Hebrewכ / ך
Babylonian numeral⟪
Egyptian hieroglyph𓎏

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

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