155728926 has 32 divisors (see below), whose sum is σ = 348019200. Its totient is φ = 51616440.

The previous prime is 155728889. The next prime is 155728939. The reversal of 155728926 is 629827551.

155728926 is a `hidden beast` number, since 1 + 557 + 2 + 8 + 92 + 6 = 666.

It is a super-2 number, since 2×155728926² = 48502996786226952, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1611 + ... + 17721.

It is an arithmetic number, because the mean of its divisors is an integer number (10875600).

Almost surely, 2^155728926 is an apocalyptic number.

155728926 is an abundant number, since it is smaller than the sum of its proper divisors (192290274).

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

155728926 is a wasteful number, since it uses less digits than its factorization.

155728926 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16301 (or 16295 counting only the distinct ones).

The product of its digits is 302400, while the sum is 45.

The square root of 155728926 is about 12479.1396338049. The cubic root of 155728926 is about 538.0092750943.

The spelling of 155728926 in words is "one hundred fifty-five million, seven hundred twenty-eight thousand, nine hundred twenty-six".