87864288 has 24 divisors (see below), whose sum is σ = 230644008. Its totient is φ = 29288064.

The previous prime is 87864251. The next prime is 87864311. The reversal of 87864288 is 88246878.

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

It is a self number, because there is not a number n which added to its sum of digits gives 87864288.

It is a congruent number.

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, 457531 + ... + 457722.

It is an arithmetic number, because the mean of its divisors is an integer number (9610167).

Almost surely, 2^87864288 is an apocalyptic number.

It is an amenable number.

87864288 is an abundant number, since it is smaller than the sum of its proper divisors (142779720).

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

87864288 is a wasteful number, since it uses less digits than its factorization.

87864288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 915266 (or 915258 counting only the distinct ones).

The product of its digits is 1376256, while the sum is 51.

The square root of 87864288 is about 9373.5952547568. The cubic root of 87864288 is about 444.5672483614.

The spelling of 87864288 in words is "eighty-seven million, eight hundred sixty-four thousand, two hundred eighty-eight".