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155161412 = 2277178049
BaseRepresentation
bin10010011111110…
…01001101000100
3101210222000102222
421033321031010
5304210131122
623221351512
73562564430
oct1117711504
9353860388
10155161412
117a64807a
1243b68598
13261b82b3
141686d9c0
15d94db42
hex93f9344

155161412 has 24 divisors (see below), whose sum is σ = 314697600. Its totient is φ = 65560320.

The previous prime is 155161411. The next prime is 155161421. The reversal of 155161412 is 214161551.

155161412 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (155161411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37037 + ... + 41012.

It is an arithmetic number, because the mean of its divisors is an integer number (13112400).

Almost surely, 2155161412 is an apocalyptic number.

It is an amenable number.

155161412 is an abundant number, since it is smaller than the sum of its proper divisors (159536188).

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

155161412 is a wasteful number, since it uses less digits than its factorization.

155161412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78131 (or 78129 counting only the distinct ones).

The product of its digits is 1200, while the sum is 26.

The square root of 155161412 is about 12456.3803731261. The cubic root of 155161412 is about 537.3549341346.

The spelling of 155161412 in words is "one hundred fifty-five million, one hundred sixty-one thousand, four hundred twelve".

Divisors: 1 2 4 7 14 28 71 142 284 497 994 1988 78049 156098 312196 546343 1092686 2185372 5541479 11082958 22165916 38790353 77580706 155161412