80942872 has 32 divisors (see below), whose sum is σ = 155358000. Its totient is φ = 39521664.

The previous prime is 80942861. The next prime is 80942887. The reversal of 80942872 is 27824908.

It is a congruent number.

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, 147703 + ... + 148249.

Almost surely, 2^80942872 is an apocalyptic number.

It is an amenable number.

80942872 is a deficient number, since it is larger than the sum of its proper divisors (74415128).

80942872 is a wasteful number, since it uses less digits than its factorization.

80942872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 955 (or 951 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 80942872 is about 8996.8256624212. The cubic root of 80942872 is about 432.5731276217.

It can be divided in two parts, 809 and 42872, that added together give a square (43681 = 209²).

The spelling of 80942872 in words is "eighty million, nine hundred forty-two thousand, eight hundred seventy-two".