89521220 has 24 divisors (see below), whose sum is σ = 190377600. Its totient is φ = 35354592.

The previous prime is 89521219. The next prime is 89521247. The reversal of 89521220 is 2212598.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26750 + ... + 29909.

It is an arithmetic number, because the mean of its divisors is an integer number (7932400).

Almost surely, 2^89521220 is an apocalyptic number.

It is an amenable number.

89521220 is an abundant number, since it is smaller than the sum of its proper divisors (100856380).

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

89521220 is a wasteful number, since it uses less digits than its factorization.

89521220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56747 (or 56745 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 89521220 is about 9461.5654095926. The cubic root of 89521220 is about 447.3443920755.

The spelling of 89521220 in words is "eighty-nine million, five hundred twenty-one thousand, two hundred twenty".