155564928 has 64 divisors (see below), whose sum is σ = 459142800. Its totient is φ = 51853824.

The previous prime is 155564921. The next prime is 155564957. The reversal of 155564928 is 829465551.

155564928 is a `hidden beast` number, since 1 + 5 + 556 + 4 + 92 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155564921) 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, 19051 + ... + 25962.

Almost surely, 2^155564928 is an apocalyptic number.

155564928 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

155564928 is an abundant number, since it is smaller than the sum of its proper divisors (303577872).

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

155564928 is an equidigital number, since it uses as much as digits as its factorization.

155564928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45036 (or 45018 counting only the distinct ones).

The product of its digits is 432000, while the sum is 45.

The square root of 155564928 is about 12472.5670172583. The cubic root of 155564928 is about 537.8203497225.

The spelling of 155564928 in words is "one hundred fifty-five million, five hundred sixty-four thousand, nine hundred twenty-eight".