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155156412 = 22319765633
BaseRepresentation
bin10010011111101…
…11111110111100
3101210221202120210
421033313332330
5304210001122
623221312420
73562544025
oct1117677674
9353852523
10155156412
117a644344
1243b65710
13261b5c38
141686bc4c
15d94c40c
hex93f7fbc

155156412 has 24 divisors (see below), whose sum is σ = 363874896. Its totient is φ = 51455488.

The previous prime is 155156411. The next prime is 155156453. The reversal of 155156412 is 214651551.

It is a self number, because there is not a number n which added to its sum of digits gives 155156412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155156411) 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, 30453 + ... + 35180.

It is an arithmetic number, because the mean of its divisors is an integer number (15161454).

Almost surely, 2155156412 is an apocalyptic number.

155156412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

155156412 is an abundant number, since it is smaller than the sum of its proper divisors (208718484).

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

155156412 is a wasteful number, since it uses less digits than its factorization.

155156412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65837 (or 65835 counting only the distinct ones).

The product of its digits is 6000, while the sum is 30.

The square root of 155156412 is about 12456.1796711512. The cubic root of 155156412 is about 537.3491620733.

The spelling of 155156412 in words is "one hundred fifty-five million, one hundred fifty-six thousand, four hundred twelve".

Divisors: 1 2 3 4 6 12 197 394 591 788 1182 2364 65633 131266 196899 262532 393798 787596 12929701 25859402 38789103 51718804 77578206 155156412