86640232 has 24 divisors (see below), whose sum is σ = 188973810. Its totient is φ = 37131360.

The previous prime is 86640193. The next prime is 86640251. The reversal of 86640232 is 23204668.

It can be written as a sum of positive squares in only one way, i.e., 45346756 + 41293476 = 6734^2 + 6426^2 .

It is a junction number, because it is equal to n+sod(n) for n = 86640194 and 86640203.

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, 110119 + ... + 110902.

Almost surely, 2^86640232 is an apocalyptic number.

It is an amenable number.

86640232 is an abundant number, since it is smaller than the sum of its proper divisors (102333578).

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

86640232 is a wasteful number, since it uses less digits than its factorization.

86640232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221041 (or 221030 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 86640232 is about 9308.0734848840. The cubic root of 86640232 is about 442.4931331991.

The spelling of 86640232 in words is "eighty-six million, six hundred forty thousand, two hundred thirty-two".