87047688 has 64 divisors (see below), whose sum is σ = 267845760. Its totient is φ = 22957056.

The previous prime is 87047641. The next prime is 87047689. The reversal of 87047688 is 88674078.

It is a super-2 number, since 2×87047688² = 15154599972290688, which contains 22 as substring.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (87047689) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17745 + ... + 22112.

It is an arithmetic number, because the mean of its divisors is an integer number (4185090).

Almost surely, 2^87047688 is an apocalyptic number.

It is an amenable number.

87047688 is an abundant number, since it is smaller than the sum of its proper divisors (180798072).

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

87047688 is a wasteful number, since it uses less digits than its factorization.

87047688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39886 (or 39882 counting only the distinct ones).

The product of its (nonzero) digits is 602112, while the sum is 48.

The square root of 87047688 is about 9329.9350480054. The cubic root of 87047688 is about 443.1857082238.

The spelling of 87047688 in words is "eighty-seven million, forty-seven thousand, six hundred eighty-eight".