87320750 has 64 divisors (see below), whose sum is σ = 180543168. Its totient is φ = 31360000.

The previous prime is 87320749. The next prime is 87320759. The reversal of 87320750 is 5702378.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87320759) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 310610 + ... + 310890.

It is an arithmetic number, because the mean of its divisors is an integer number (2820987).

Almost surely, 2^87320750 is an apocalyptic number.

87320750 is an abundant number, since it is smaller than the sum of its proper divisors (93222418).

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

87320750 is a wasteful number, since it uses less digits than its factorization.

87320750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422 (or 412 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 32.

The square root of 87320750 is about 9344.5572393774. The cubic root of 87320750 is about 443.6486378284.

The spelling of 87320750 in words is "eighty-seven million, three hundred twenty thousand, seven hundred fifty".