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157158 = 2328731
BaseRepresentation
bin100110010111100110
321222120200
4212113212
520012113
63211330
71223121
oct462746
9258520
10157158
11a8091
1276b46
13566c1
14413b8
1531873
hex265e6

157158 has 12 divisors (see below), whose sum is σ = 340548. Its totient is φ = 52380.

The previous prime is 157141. The next prime is 157163. The reversal of 157158 is 851751.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

157158 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4348 + ... + 4383.

It is an arithmetic number, because the mean of its divisors is an integer number (28379).

2157158 is an apocalyptic number.

157158 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

157158 is an abundant number, since it is smaller than the sum of its proper divisors (183390).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

157158 is a wasteful number, since it uses less digits than its factorization.

157158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8739 (or 8736 counting only the distinct ones).

The product of its digits is 1400, while the sum is 27.

The square root of 157158 is about 396.4315830001. The cubic root of 157158 is about 53.9649978931.

The spelling of 157158 in words is "one hundred fifty-seven thousand, one hundred fifty-eight".

Divisors: 1 2 3 6 9 18 8731 17462 26193 52386 78579 157158