158 (number)

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158 is an even whole number before 159 and after 157.

List of numbers — Integers << 150 151 152 153 154 155 156 157 158 159 >>
Cardinal	One hundred [and] fifty-eight
Ordinal	158th
Factorization
Roman numeral	CLVIII
Binary	10011110
Octal	236
Hexadecimal	9E

[edit] In mathematics

158 is a nontotient, since there is no integer with 158 coprimes below it. 158 is a Perrin number, appearing after 68, 90, 119.

It is the number of digits in the decimal expansion of 100!, or the product of all the natural numbers up to and including 100.

[edit] In other fields

158 is also:

• The year AD 158 or 158 BC.