87231908 has 12 divisors (see below), whose sum is σ = 152861772. Its totient is φ = 43557120.

The previous prime is 87231899. The next prime is 87231917. The reversal of 87231908 is 80913278.

It is an interprime number because it is at equal distance from previous prime (87231899) and next prime (87231917).

It can be written as a sum of positive squares in 2 ways, for example, as 5654884 + 81577024 = 2378^2 + 9032^2 .

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, 11285 + ... + 17372.

It is an arithmetic number, because the mean of its divisors is an integer number (12738481).

Almost surely, 2^87231908 is an apocalyptic number.

It is an amenable number.

87231908 is a deficient number, since it is larger than the sum of its proper divisors (65629864).

87231908 is a wasteful number, since it uses less digits than its factorization.

87231908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29422 (or 29420 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 87231908 is about 9339.8023533692. The cubic root of 87231908 is about 443.4981275662.

The spelling of 87231908 in words is "eighty-seven million, two hundred thirty-one thousand, nine hundred eight".