87292872 has 24 divisors (see below), whose sum is σ = 236418390. Its totient is φ = 29097600.

The previous prime is 87292853. The next prime is 87292901. The reversal of 87292872 is 27829278.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 47527236 + 39765636 = 6894^2 + 6306^2 .

It is a tau number, because it is divible by the number of its divisors (24).

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, 606129 + ... + 606272.

Almost surely, 2^87292872 is an apocalyptic number.

It is an amenable number.

87292872 is an abundant number, since it is smaller than the sum of its proper divisors (149125518).

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

87292872 is a wasteful number, since it uses less digits than its factorization.

87292872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1212413 (or 1212406 counting only the distinct ones).

The product of its digits is 225792, while the sum is 45.

The square root of 87292872 is about 9343.0654498403. The cubic root of 87292872 is about 443.6014197534.

The spelling of 87292872 in words is "eighty-seven million, two hundred ninety-two thousand, eight hundred seventy-two".