89788972 has 72 divisors (see below), whose sum is σ = 199085040. Its totient is φ = 35118720.

The previous prime is 89788969. The next prime is 89788981. The reversal of 89788972 is 27988798.

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 23 ways as a sum of consecutive naturals, for example, 333654 + ... + 333922.

It is an arithmetic number, because the mean of its divisors is an integer number (2765070).

Almost surely, 2^89788972 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 89788972, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99542520).

89788972 is an abundant number, since it is smaller than the sum of its proper divisors (109296068).

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

89788972 is a wasteful number, since it uses less digits than its factorization.

89788972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431 (or 422 counting only the distinct ones).

The product of its digits is 4064256, while the sum is 58.

The square root of 89788972 is about 9475.7043010005. The cubic root of 89788972 is about 447.7899405847.

The spelling of 89788972 in words is "eighty-nine million, seven hundred eighty-eight thousand, nine hundred seventy-two".