80721088 has 28 divisors (see below), whose sum is σ = 183064912. Its totient is φ = 34594560.

The previous prime is 80721077. The next prime is 80721097. The reversal of 80721088 is 88012708.

It is a tau number, because it is divible by the number of its divisors (28).

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 3 ways as a sum of consecutive naturals, for example, 89643 + ... + 90538.

Almost surely, 2^80721088 is an apocalyptic number.

It is an amenable number.

80721088 is an abundant number, since it is smaller than the sum of its proper divisors (102343824).

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

80721088 is a wasteful number, since it uses less digits than its factorization.

80721088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180200 (or 180190 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 34.

The square root of 80721088 is about 8984.4915270704. The cubic root of 80721088 is about 432.1776818248.

The spelling of 80721088 in words is "eighty million, seven hundred twenty-one thousand, eighty-eight".