155364880 has 40 divisors (see below), whose sum is σ = 394064064. Its totient is φ = 56496000.

The previous prime is 155364857. The next prime is 155364947. The reversal of 155364880 is 88463551.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (40).

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, 87396 + ... + 89155.

Almost surely, 2^155364880 is an apocalyptic number.

155364880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155364880 is an abundant number, since it is smaller than the sum of its proper divisors (238699184).

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

155364880 is a wasteful number, since it uses less digits than its factorization.

155364880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176575 (or 176569 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 40.

The square root of 155364880 is about 12464.5449174850. The cubic root of 155364880 is about 537.5897149688.

The spelling of 155364880 in words is "one hundred fifty-five million, three hundred sixty-four thousand, eight hundred eighty".