89131572 has 36 divisors (see below), whose sum is σ = 232575616. Its totient is φ = 28751760.

The previous prime is 89131547. The next prime is 89131573. The reversal of 89131572 is 27513198.

89131572 is a `hidden beast` number, since 89 + 1 + 3 + 1 + 572 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89131573) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38818 + ... + 41049.

Almost surely, 2^89131572 is an apocalyptic number.

It is an amenable number.

89131572 is an abundant number, since it is smaller than the sum of its proper divisors (143444044).

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

89131572 is a wasteful number, since it uses less digits than its factorization.

89131572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79908 (or 79903 counting only the distinct ones).

The product of its digits is 15120, while the sum is 36.

The square root of 89131572 is about 9440.9518587905. The cubic root of 89131572 is about 446.6944145035.

The spelling of 89131572 in words is "eighty-nine million, one hundred thirty-one thousand, five hundred seventy-two".