18 (nummer)

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18 (echteen) is the naitural nummer follaein 17 an precedin 19.

← 17 18 19 →
Cardinalechteen
Ordinal18t (echteent)
Numeral seestemoctodecimal
Factorisation2 × 32
Divisors1, 2, 3, 6, 9, 18
Greek numeralΙΗ´
Roman numeralXVIII
Binar100102
Ternary2003
Quaternary1024
Quinary335
Senary306
Octal228
Duodecimal1612
Hexadecimal1216
VigesimalI20
Base 36I36