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157130916 = 22313094243
BaseRepresentation
bin10010101110110…
…10000010100100
3101221200002002120
421113122002210
5310211142131
623331505540
73615406425
oct1127320244
9357602076
10157130916
1180772868
12447582b0
1326727897
1416c2364c
15dbdc496
hex95da0a4

157130916 has 12 divisors (see below), whose sum is σ = 366638832. Its totient is φ = 52376968.

The previous prime is 157130899. The next prime is 157130923. The reversal of 157130916 is 619031751.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6547110 + ... + 6547133.

It is an arithmetic number, because the mean of its divisors is an integer number (30553236).

Almost surely, 2157130916 is an apocalyptic number.

It is an amenable number.

157130916 is an abundant number, since it is smaller than the sum of its proper divisors (209507916).

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

157130916 is a wasteful number, since it uses less digits than its factorization.

157130916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13094250 (or 13094248 counting only the distinct ones).

The product of its (nonzero) digits is 5670, while the sum is 33.

The square root of 157130916 is about 12535.1871146784. The cubic root of 157130916 is about 539.6189767556.

The spelling of 157130916 in words is "one hundred fifty-seven million, one hundred thirty thousand, nine hundred sixteen".

Divisors: 1 2 3 4 6 12 13094243 26188486 39282729 52376972 78565458 157130916