87265218 has 16 divisors (see below), whose sum is σ = 174797856. Its totient is φ = 29043840.

The previous prime is 87265201. The next prime is 87265231. The reversal of 87265218 is 81256278.

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, 6768 + ... + 14843.

It is an arithmetic number, because the mean of its divisors is an integer number (10924866).

Almost surely, 2^87265218 is an apocalyptic number.

87265218 is an abundant number, since it is smaller than the sum of its proper divisors (87532638).

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

87265218 is a wasteful number, since it uses less digits than its factorization.

87265218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22289.

The product of its digits is 53760, while the sum is 39.

The square root of 87265218 is about 9341.5854114813. The cubic root of 87265218 is about 443.5545711428.

The spelling of 87265218 in words is "eighty-seven million, two hundred sixty-five thousand, two hundred eighteen".