87518140 has 12 divisors (see below), whose sum is σ = 183788136. Its totient is φ = 35007248.

The previous prime is 87518129. The next prime is 87518141. The reversal of 87518140 is 4181578.

It is a junction number, because it is equal to n+sod(n) for n = 87518096 and 87518105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87518141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2187934 + ... + 2187973.

It is an arithmetic number, because the mean of its divisors is an integer number (15315678).

Almost surely, 2^87518140 is an apocalyptic number.

It is an amenable number.

87518140 is an abundant number, since it is smaller than the sum of its proper divisors (96269996).

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

87518140 is a wasteful number, since it uses less digits than its factorization.

87518140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4375916 (or 4375914 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 34.

The square root of 87518140 is about 9355.1130404715. The cubic root of 87518140 is about 443.9826779488.

The spelling of 87518140 in words is "eighty-seven million, five hundred eighteen thousand, one hundred forty".