172 (number)
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|---|---|---|---|---|
| Cardinal | one hundred seventy-two | |||
| Ordinal | 172nd (one hundred seventy-second) |
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| Factorization | 22× 43 | |||
| Divisors | 1, 2, 4, 43, 86, 172 | |||
| Greek numeral | ΡΟΒ´ | |||
| Roman numeral | CLXXII | |||
| Binary | 101011002 | |||
| Ternary | 201013 | |||
| Quaternary | 22304 | |||
| Quinary | 11425 | |||
| Senary | 4446 | |||
| Octal | 2548 | |||
| Duodecimal | 12412 | |||
| Hexadecimal | AC16 | |||
| Vigesimal | 8C20 | |||
| Base 36 | 4S36 | |||
172 (one hundred [and] seventy-two) is the natural number following 171 and preceding 173.
172 is an even number, a composite number and a deficient number. It is also a 30-gonal number.
172 is a noncototient integer, as well as the sum of Euler's totient function φ(x) over the first twenty-three integers. 172 is also a member of the Lazy Caterer's Sequence.
172 is a repdigit in base 6 (444), as well as in bases 42, 85, and 171.
172 is also:
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Wikipedia