89728872 has 32 divisors (see below), whose sum is σ = 225629280. Its totient is φ = 29735360.

The previous prime is 89728867. The next prime is 89728883. The reversal of 89728872 is 27882798.

It is a happy number.

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 7 ways as a sum of consecutive naturals, for example, 6654 + ... + 14957.

It is an arithmetic number, because the mean of its divisors is an integer number (7050915).

Almost surely, 2^89728872 is an apocalyptic number.

It is an amenable number.

89728872 is an abundant number, since it is smaller than the sum of its proper divisors (135900408).

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

89728872 is a wasteful number, since it uses less digits than its factorization.

89728872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21793 (or 21789 counting only the distinct ones).

The product of its digits is 903168, while the sum is 51.

The square root of 89728872 is about 9472.5325019237. The cubic root of 89728872 is about 447.6900092992.

The spelling of 89728872 in words is "eighty-nine million, seven hundred twenty-eight thousand, eight hundred seventy-two".