20 (number)

CardinaltwentyOrdinal20th
(twentieth)Numeral systemvigesimalFactorization2 × 5Divisors1, 2, 4, 5, 10, 20Greek numeralΚ´Roman numeralXX, xxBinary10100₂Ternary202₃Senary32₆Octal24₈Duodecimal18₁₂Hexadecimal14₁₆ArmenianԻHebrewכ / ךBabylonian 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.