87431960 has 64 divisors (see below), whose sum is σ = 245272320. Its totient is φ = 27250560.

The previous prime is 87431959. The next prime is 87431987. The reversal of 87431960 is 6913478.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11114 + ... + 17273.

It is an arithmetic number, because the mean of its divisors is an integer number (3832380).

Almost surely, 2^87431960 is an apocalyptic number.

It is an amenable number.

87431960 is an abundant number, since it is smaller than the sum of its proper divisors (157840360).

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

87431960 is a wasteful number, since it uses less digits than its factorization.

87431960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28416 (or 28412 counting only the distinct ones).

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

The square root of 87431960 is about 9350.5058686683. The cubic root of 87431960 is about 443.8368986730.

The spelling of 87431960 in words is "eighty-seven million, four hundred thirty-one thousand, nine hundred sixty".