87539320 has 32 divisors (see below), whose sum is σ = 214870320. Its totient is φ = 31832320.

The previous prime is 87539297. The next prime is 87539323. The reversal of 87539320 is 2393578.

It is a self number, because there is not a number n which added to its sum of digits gives 87539320.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87539323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99037 + ... + 99916.

Almost surely, 2^87539320 is an apocalyptic number.

It is an amenable number.

87539320 is an abundant number, since it is smaller than the sum of its proper divisors (127331000).

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

87539320 is a wasteful number, since it uses less digits than its factorization.

87539320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198975 (or 198971 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 87539320 is about 9356.2449732785. The cubic root of 87539320 is about 444.0184906944.

The spelling of 87539320 in words is "eighty-seven million, five hundred thirty-nine thousand, three hundred twenty".