87313872 has 40 divisors (see below), whose sum is σ = 226324800. Its totient is φ = 29006080.

The previous prime is 87313859. The next prime is 87313907. The reversal of 87313872 is 27831378.

It is a self number, because there is not a number n which added to its sum of digits gives 87313872.

It is a congruent number.

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, 12004 + ... + 17852.

It is an arithmetic number, because the mean of its divisors is an integer number (5658120).

Almost surely, 2^87313872 is an apocalyptic number.

It is an amenable number.

87313872 is an abundant number, since it is smaller than the sum of its proper divisors (139010928).

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

87313872 is a wasteful number, since it uses less digits than its factorization.

87313872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6171 (or 6165 counting only the distinct ones).

The product of its digits is 56448, while the sum is 39.

The square root of 87313872 is about 9344.1892104131. The cubic root of 87313872 is about 443.6369892208.

The spelling of 87313872 in words is "eighty-seven million, three hundred thirteen thousand, eight hundred seventy-two".