155867880 has 64 divisors (see below), whose sum is σ = 534407040. Its totient is φ = 35626752.

The previous prime is 155867879. The next prime is 155867903. The reversal of 155867880 is 88768551.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91939 + ... + 93618.

It is an arithmetic number, because the mean of its divisors is an integer number (8350110).

Almost surely, 2^155867880 is an apocalyptic number.

155867880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155867880 is an abundant number, since it is smaller than the sum of its proper divisors (378539160).

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

155867880 is a wasteful number, since it uses less digits than its factorization.

155867880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185578 (or 185574 counting only the distinct ones).

The product of its (nonzero) digits is 537600, while the sum is 48.

The square root of 155867880 is about 12484.7058435511. The cubic root of 155867880 is about 538.1692460526.

The spelling of 155867880 in words is "one hundred fifty-five million, eight hundred sixty-seven thousand, eight hundred eighty".