86972128 has 24 divisors (see below), whose sum is σ = 171459288. Its totient is φ = 43426944.

The previous prime is 86972113. The next prime is 86972147. The reversal of 86972128 is 82127968.

It is a congruent 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 3 ways as a sum of consecutive naturals, for example, 31075 + ... + 33757.

It is an arithmetic number, because the mean of its divisors is an integer number (7144137).

Almost surely, 2^86972128 is an apocalyptic number.

It is an amenable number.

86972128 is a deficient number, since it is larger than the sum of its proper divisors (84487160).

86972128 is a wasteful number, since it uses less digits than its factorization.

86972128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3706 (or 3698 counting only the distinct ones).

The product of its digits is 96768, while the sum is 43.

The square root of 86972128 is about 9325.8848373760. The cubic root of 86972128 is about 443.0574382803.

The spelling of 86972128 in words is "eighty-six million, nine hundred seventy-two thousand, one hundred twenty-eight".