87657888 has 24 divisors (see below), whose sum is σ = 230102208. Its totient is φ = 29219264.

The previous prime is 87657883. The next prime is 87657907. The reversal of 87657888 is 88875678.

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

It is not an unprimeable number, because it can be changed into a prime (87657883) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 456456 + ... + 456647.

It is an arithmetic number, because the mean of its divisors is an integer number (9587592).

Almost surely, 2^87657888 is an apocalyptic number.

It is an amenable number.

87657888 is an abundant number, since it is smaller than the sum of its proper divisors (142444320).

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

87657888 is a wasteful number, since it uses less digits than its factorization.

87657888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 913116 (or 913108 counting only the distinct ones).

The product of its digits is 6021120, while the sum is 57.

The square root of 87657888 is about 9362.5791318418. The cubic root of 87657888 is about 444.2188678248.

It can be divided in two parts, 8765 and 7888, that added together give a triangular number (16653 = T₁₈₂).

The spelling of 87657888 in words is "eighty-seven million, six hundred fifty-seven thousand, eight hundred eighty-eight".