87520118 has 24 divisors (see below), whose sum is σ = 158355792. Its totient is φ = 35532432.

The previous prime is 87520091. The next prime is 87520123. The reversal of 87520118 is 81102578.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 3605 + ... + 13712.

It is an arithmetic number, because the mean of its divisors is an integer number (6598158).

Almost surely, 2^87520118 is an apocalyptic number.

87520118 is a deficient number, since it is larger than the sum of its proper divisors (70835674).

87520118 is a wasteful number, since it uses less digits than its factorization.

87520118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17364 (or 17345 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 32.

The square root of 87520118 is about 9355.2187574637. The cubic root of 87520118 is about 443.9860227453.

The spelling of 87520118 in words is "eighty-seven million, five hundred twenty thousand, one hundred eighteen".