87318504 has 96 divisors (see below), whose sum is σ = 291083520. Its totient is φ = 23027328.

The previous prime is 87318503. The next prime is 87318521. The reversal of 87318504 is 40581378.

It is a super-2 number, since 2×87318504² = 15249042281596032, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (87318503) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 112 + ... + 13215.

It is an arithmetic number, because the mean of its divisors is an integer number (3032120).

Almost surely, 2^87318504 is an apocalyptic number.

87318504 is a gapful number since it is divisible by the number (84) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87318504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (145541760).

87318504 is an abundant number, since it is smaller than the sum of its proper divisors (203765016).

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

87318504 is a wasteful number, since it uses less digits than its factorization.

87318504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13359 (or 13352 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 87318504 is about 9344.4370616961. The cubic root of 87318504 is about 443.6448340613.

The spelling of 87318504 in words is "eighty-seven million, three hundred eighteen thousand, five hundred four".