155932920 has 288 divisors, whose sum is σ = 601220880. Its totient is φ = 34744320.

The previous prime is 155932901. The next prime is 155932937. The reversal of 155932920 is 29239551.

It is a happy number.

155932920 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 669124 + ... + 669356.

Almost surely, 2^155932920 is an apocalyptic number.

155932920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155932920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (300610440).

155932920 is an abundant number, since it is smaller than the sum of its proper divisors (445287960).

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

155932920 is a wasteful number, since it uses less digits than its factorization.

155932920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287 (or 267 counting only the distinct ones).

The product of its (nonzero) digits is 24300, while the sum is 36.

The square root of 155932920 is about 12487.3103589204. The cubic root of 155932920 is about 538.2440907658.

The spelling of 155932920 in words is "one hundred fifty-five million, nine hundred thirty-two thousand, nine hundred twenty".