80557988 has 24 divisors (see below), whose sum is σ = 161411712. Its totient is φ = 34461504.

The previous prime is 80557979. The next prime is 80557999. The reversal of 80557988 is 88975508.

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, 14945 + ... + 19607.

It is an arithmetic number, because the mean of its divisors is an integer number (6725488).

Almost surely, 2^80557988 is an apocalyptic number.

It is an amenable number.

80557988 is an abundant number, since it is smaller than the sum of its proper divisors (80853724).

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

80557988 is a wasteful number, since it uses less digits than its factorization.

80557988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5291 (or 5289 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 50.

The square root of 80557988 is about 8975.4101856127. The cubic root of 80557988 is about 431.8864084632.

The spelling of 80557988 in words is "eighty million, five hundred fifty-seven thousand, nine hundred eighty-eight".