80910728 has 16 divisors (see below), whose sum is σ = 151962000. Its totient is φ = 40387536.

The previous prime is 80910719. The next prime is 80910737. The reversal of 80910728 is 82701908.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (80910719) and next prime (80910737).

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, 3218 + ... + 13121.

It is an arithmetic number, because the mean of its divisors is an integer number (9497625).

Almost surely, 2^80910728 is an apocalyptic number.

It is an amenable number.

80910728 is a deficient number, since it is larger than the sum of its proper divisors (71051272).

80910728 is a wasteful number, since it uses less digits than its factorization.

80910728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16964 (or 16960 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 35.

The square root of 80910728 is about 8995.0390771803. The cubic root of 80910728 is about 432.5158589527.

The spelling of 80910728 in words is "eighty million, nine hundred ten thousand, seven hundred twenty-eight".