89972570 has 24 divisors (see below), whose sum is σ = 165510324. Its totient is φ = 35214656.

The previous prime is 89972537. The next prime is 89972591. The reversal of 89972570 is 7527998.

It can be written as a sum of positive squares in 2 ways, for example, as 82283041 + 7689529 = 9071^2 + 2773^2 .

It is a Harshad number since it is a multiple of its sum of digits (47).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20054 + ... + 24126.

Almost surely, 2^89972570 is an apocalyptic number.

89972570 is a deficient number, since it is larger than the sum of its proper divisors (75537754).

89972570 is a wasteful number, since it uses less digits than its factorization.

89972570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4174 (or 4127 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 47.

The square root of 89972570 is about 9485.3871823980. The cubic root of 89972570 is about 448.0949422770.

The spelling of 89972570 in words is "eighty-nine million, nine hundred seventy-two thousand, five hundred seventy".