87205880 has 32 divisors (see below), whose sum is σ = 204746400. Its totient is φ = 33365376.

The previous prime is 87205861. The next prime is 87205907. The reversal of 87205880 is 8850278.

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, 46475 + ... + 48314.

It is an arithmetic number, because the mean of its divisors is an integer number (6398325).

Almost surely, 2^87205880 is an apocalyptic number.

It is an amenable number.

87205880 is an abundant number, since it is smaller than the sum of its proper divisors (117540520).

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

87205880 is a wasteful number, since it uses less digits than its factorization.

87205880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94823 (or 94819 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 38.

The square root of 87205880 is about 9338.4088580443. The cubic root of 87205880 is about 443.4540132896.

The spelling of 87205880 in words is "eighty-seven million, two hundred five thousand, eight hundred eighty".