87521832 has 48 divisors (see below), whose sum is σ = 240589440. Its totient is φ = 28736928.

The previous prime is 87521821. The next prime is 87521843. The reversal of 87521832 is 23812578.

It is an interprime number because it is at equal distance from previous prime (87521821) and next prime (87521843).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4248 + ... + 13895.

It is an arithmetic number, because the mean of its divisors is an integer number (5012280).

Almost surely, 2^87521832 is an apocalyptic number.

It is an amenable number.

87521832 is an abundant number, since it is smaller than the sum of its proper divisors (153067608).

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

87521832 is a wasteful number, since it uses less digits than its factorization.

87521832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18222 (or 18215 counting only the distinct ones).

The product of its digits is 26880, while the sum is 36.

The square root of 87521832 is about 9355.3103636384. The cubic root of 87521832 is about 443.9889210773.

The spelling of 87521832 in words is "eighty-seven million, five hundred twenty-one thousand, eight hundred thirty-two".