87038864 has 20 divisors (see below), whose sum is σ = 183968880. Its totient is φ = 39563040.

The previous prime is 87038851. The next prime is 87038899. The reversal of 87038864 is 46883078.

It is a happy number.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 247094 + ... + 247445.

It is an arithmetic number, because the mean of its divisors is an integer number (9198444).

Almost surely, 2^87038864 is an apocalyptic number.

It is an amenable number.

87038864 is an abundant number, since it is smaller than the sum of its proper divisors (96930016).

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

87038864 is a wasteful number, since it uses less digits than its factorization.

87038864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494558 (or 494552 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 44.

The square root of 87038864 is about 9329.4621495561. The cubic root of 87038864 is about 443.1707325137.

The spelling of 87038864 in words is "eighty-seven million, thirty-eight thousand, eight hundred sixty-four".