87864492 has 24 divisors (see below), whose sum is σ = 210559216. Its totient is φ = 28496448.

The previous prime is 87864487. The next prime is 87864527. The reversal of 87864492 is 29446878.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98503 + ... + 99390.

Almost surely, 2^87864492 is an apocalyptic number.

It is an amenable number.

87864492 is an abundant number, since it is smaller than the sum of its proper divisors (122694724).

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

87864492 is a wasteful number, since it uses less digits than its factorization.

87864492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197937 (or 197935 counting only the distinct ones).

The product of its digits is 774144, while the sum is 48.

The square root of 87864492 is about 9373.6061363810. The cubic root of 87864492 is about 444.5675924209.

The spelling of 87864492 in words is "eighty-seven million, eight hundred sixty-four thousand, four hundred ninety-two".