87945880 has 32 divisors (see below), whose sum is σ = 215868240. Its totient is φ = 31980160.

The previous prime is 87945863. The next prime is 87945899. The reversal of 87945880 is 8854978.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99499 + ... + 100378.

Almost surely, 2^87945880 is an apocalyptic number.

It is an amenable number.

87945880 is an abundant number, since it is smaller than the sum of its proper divisors (127922360).

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

87945880 is a wasteful number, since it uses less digits than its factorization.

87945880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199899 (or 199895 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 49.

The square root of 87945880 is about 9377.9464703100. The cubic root of 87945880 is about 444.7048162312.

The spelling of 87945880 in words is "eighty-seven million, nine hundred forty-five thousand, eight hundred eighty".