87520928 has 24 divisors (see below), whose sum is σ = 187971840. Its totient is φ = 39782080.

The previous prime is 87520903. The next prime is 87520931. The reversal of 87520928 is 82902578.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123968 + ... + 124671.

It is an arithmetic number, because the mean of its divisors is an integer number (7832160).

Almost surely, 2^87520928 is an apocalyptic number.

87520928 is a gapful number since it is divisible by the number (88) formed by its first and last digit.

It is an amenable number.

87520928 is an abundant number, since it is smaller than the sum of its proper divisors (100450912).

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

87520928 is a wasteful number, since it uses less digits than its factorization.

87520928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248660 (or 248652 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 41.

The square root of 87520928 is about 9355.2620487082. The cubic root of 87520928 is about 443.9873924402.

The spelling of 87520928 in words is "eighty-seven million, five hundred twenty thousand, nine hundred twenty-eight".