87118790 has 24 divisors (see below), whose sum is σ = 172368000. Its totient is φ = 31679120.

The previous prime is 87118789. The next prime is 87118847. The reversal of 87118790 is 9781178.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34790 + ... + 37209.

It is an arithmetic number, because the mean of its divisors is an integer number (7182000).

Almost surely, 2^87118790 is an apocalyptic number.

87118790 is a deficient number, since it is larger than the sum of its proper divisors (85249210).

87118790 is a wasteful number, since it uses less digits than its factorization.

87118790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72028 (or 72017 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 41.

The square root of 87118790 is about 9333.7446933158. The cubic root of 87118790 is about 443.3063425380.

The spelling of 87118790 in words is "eighty-seven million, one hundred eighteen thousand, seven hundred ninety".