87993888 has 48 divisors (see below), whose sum is σ = 238956480. Its totient is φ = 28318976.

The previous prime is 87993877. The next prime is 87993901. The reversal of 87993888 is 88839978.

It is a tau number, because it is divible by the number of its divisors (48).

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 7 ways as a sum of consecutive naturals, for example, 13020 + ... + 18587.

It is an arithmetic number, because the mean of its divisors is an integer number (4978260).

Almost surely, 2^87993888 is an apocalyptic number.

It is an amenable number.

87993888 is an abundant number, since it is smaller than the sum of its proper divisors (150962592).

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

87993888 is a wasteful number, since it uses less digits than its factorization.

87993888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31649 (or 31641 counting only the distinct ones).

The product of its digits is 6967296, while the sum is 60.

The square root of 87993888 is about 9380.5057432955. The cubic root of 87993888 is about 444.7857201737.

The spelling of 87993888 in words is "eighty-seven million, nine hundred ninety-three thousand, eight hundred eighty-eight".