155752872 has 128 divisors (see below), whose sum is σ = 449141760. Its totient is φ = 44549120.

The previous prime is 155752867. The next prime is 155752889. The reversal of 155752872 is 278257551.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 686023 + ... + 686249.

It is an arithmetic number, because the mean of its divisors is an integer number (3508920).

Almost surely, 2^155752872 is an apocalyptic number.

155752872 is a gapful number since it is divisible by the number (12) 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 155752872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (224570880).

155752872 is an abundant number, since it is smaller than the sum of its proper divisors (293388888).

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

155752872 is a wasteful number, since it uses less digits than its factorization.

155752872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 383 (or 379 counting only the distinct ones).

The product of its digits is 196000, while the sum is 42.

The square root of 155752872 is about 12480.0990380686. The cubic root of 155752872 is about 538.0368497398.

The spelling of 155752872 in words is "one hundred fifty-five million, seven hundred fifty-two thousand, eight hundred seventy-two".