87858816 has 32 divisors (see below), whose sum is σ = 233376000. Its totient is φ = 29286144.

The previous prime is 87858779. The next prime is 87858821. The reversal of 87858816 is 61885878.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (32).

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, 114016 + ... + 114783.

It is an arithmetic number, because the mean of its divisors is an integer number (7293000).

Almost surely, 2^87858816 is an apocalyptic number.

It is an amenable number.

87858816 is an abundant number, since it is smaller than the sum of its proper divisors (145517184).

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

87858816 is a wasteful number, since it uses less digits than its factorization.

87858816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228816 (or 228804 counting only the distinct ones).

The product of its digits is 860160, while the sum is 51.

The square root of 87858816 is about 9373.3033664765. The cubic root of 87858816 is about 444.5580192705.

The spelling of 87858816 in words is "eighty-seven million, eight hundred fifty-eight thousand, eight hundred sixteen".