80972520 has 32 divisors (see below), whose sum is σ = 242917920. Its totient is φ = 21592640.

The previous prime is 80972491. The next prime is 80972531. The reversal of 80972520 is 2527908.

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, 337266 + ... + 337505.

It is an arithmetic number, because the mean of its divisors is an integer number (7591185).

Almost surely, 2^80972520 is an apocalyptic number.

It is an amenable number.

80972520 is an abundant number, since it is smaller than the sum of its proper divisors (161945400).

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

80972520 is a wasteful number, since it uses less digits than its factorization.

80972520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 674785 (or 674781 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 80972520 is about 8998.4732038274. The cubic root of 80972520 is about 432.6259359058.

The spelling of 80972520 in words is "eighty million, nine hundred seventy-two thousand, five hundred twenty".