18 (number)

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0 10 20 30 40 50 60 70 80 90
Cardinal eighteen
Ordinal 18th
Factorization 2 × 32
Greek numeral ΙΗ´
Roman numeral XVIII
Binary 100102
Ternary 2003
Quaternary 1024
Quinary 335
Senary 306
Octal 228
Duodecimal 1612
Hexadecimal 1216
Vigesimal I20
Base 36 I36

18 is a number that may refer to:

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