155696920 has 32 divisors (see below), whose sum is σ = 353088000. Its totient is φ = 61786368.

The previous prime is 155696917. The next prime is 155696941. The reversal of 155696920 is 29696551.

155696920 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10245 + ... + 20404.

It is an arithmetic number, because the mean of its divisors is an integer number (11034000).

Almost surely, 2^155696920 is an apocalyptic number.

155696920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155696920 is an abundant number, since it is smaller than the sum of its proper divisors (197391080).

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

155696920 is a wasteful number, since it uses less digits than its factorization.

155696920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30787 (or 30783 counting only the distinct ones).

The product of its (nonzero) digits is 145800, while the sum is 43.

The square root of 155696920 is about 12477.8571878348. The cubic root of 155696920 is about 537.9724146661.

The spelling of 155696920 in words is "one hundred fifty-five million, six hundred ninety-six thousand, nine hundred twenty".