80921928 has 16 divisors (see below), whose sum is σ = 202304880. Its totient is φ = 26973968.

The previous prime is 80921917. The next prime is 80921933. The reversal of 80921928 is 82912908.

It is an unprimeable number.

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, 1685850 + ... + 1685897.

It is an arithmetic number, because the mean of its divisors is an integer number (12644055).

Almost surely, 2^80921928 is an apocalyptic number.

It is an amenable number.

80921928 is an abundant number, since it is smaller than the sum of its proper divisors (121382952).

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

80921928 is a wasteful number, since it uses less digits than its factorization.

80921928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3371756 (or 3371752 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 39.

The square root of 80921928 is about 8995.6616210260. The cubic root of 80921928 is about 432.5358149142.

The spelling of 80921928 in words is "eighty million, nine hundred twenty-one thousand, nine hundred twenty-eight".