80639272 has 32 divisors (see below), whose sum is σ = 173517120. Its totient is φ = 34416000.

The previous prime is 80639269. The next prime is 80639281. The reversal of 80639272 is 27293608.

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 7 ways as a sum of consecutive naturals, for example, 11188 + ... + 16924.

It is an arithmetic number, because the mean of its divisors is an integer number (5422410).

Almost surely, 2^80639272 is an apocalyptic number.

It is an amenable number.

80639272 is an abundant number, since it is smaller than the sum of its proper divisors (92877848).

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

80639272 is a wasteful number, since it uses less digits than its factorization.

80639272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6001 (or 5997 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 80639272 is about 8979.9371935443. The cubic root of 80639272 is about 432.0316191991.

The spelling of 80639272 in words is "eighty million, six hundred thirty-nine thousand, two hundred seventy-two".