155804080 has 20 divisors (see below), whose sum is σ = 362244672. Its totient is φ = 62321600.

The previous prime is 155804069. The next prime is 155804087. The reversal of 155804080 is 80408551.

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×155804080² = 48549822689292800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (155804087) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 973696 + ... + 973855.

Almost surely, 2^155804080 is an apocalyptic number.

155804080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155804080 is an abundant number, since it is smaller than the sum of its proper divisors (206440592).

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

155804080 is a wasteful number, since it uses less digits than its factorization.

155804080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1947564 (or 1947558 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 31.

The square root of 155804080 is about 12482.1504557508. The cubic root of 155804080 is about 538.0958080365.

The spelling of 155804080 in words is "one hundred fifty-five million, eight hundred four thousand, eighty".