87321080 has 64 divisors (see below), whose sum is σ = 244961280. Its totient is φ = 27216000.

The previous prime is 87321043. The next prime is 87321109. The reversal of 87321080 is 8012378.

87321080 = 1005² + 1006² + ... + 1084².

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11096 + ... + 17255.

It is an arithmetic number, because the mean of its divisors is an integer number (3827520).

Almost surely, 2^87321080 is an apocalyptic number.

It is an amenable number.

87321080 is an abundant number, since it is smaller than the sum of its proper divisors (157640200).

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

87321080 is a wasteful number, since it uses less digits than its factorization.

87321080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28380 (or 28376 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 87321080 is about 9344.5748966981. The cubic root of 87321080 is about 443.6491967023.

The spelling of 87321080 in words is "eighty-seven million, three hundred twenty-one thousand, eighty".