86972132 has 18 divisors (see below), whose sum is σ = 164810898. Its totient is φ = 40140672.

The previous prime is 86972113. The next prime is 86972147. The reversal of 86972132 is 23127968.

It can be written as a sum of positive squares in 3 ways, for example, as 556516 + 86415616 = 746^2 + 9296^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 63653 + ... + 65004.

It is an arithmetic number, because the mean of its divisors is an integer number (9156161).

Almost surely, 2^86972132 is an apocalyptic number.

It is an amenable number.

86972132 is a deficient number, since it is larger than the sum of its proper divisors (77838766).

86972132 is a wasteful number, since it uses less digits than its factorization.

86972132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128687 (or 128672 counting only the distinct ones).

The product of its digits is 36288, while the sum is 38.

The square root of 86972132 is about 9325.8850518329. The cubic root of 86972132 is about 443.0574450727.

The spelling of 86972132 in words is "eighty-six million, nine hundred seventy-two thousand, one hundred thirty-two".