87509232 has 30 divisors (see below), whose sum is σ = 244904712. Its totient is φ = 29169696.

The previous prime is 87509221. The next prime is 87509237. The reversal of 87509232 is 23290578.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87509237) 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 5 ways as a sum of consecutive naturals, for example, 303708 + ... + 303995.

Almost surely, 2^87509232 is an apocalyptic number.

It is an amenable number.

87509232 is an abundant number, since it is smaller than the sum of its proper divisors (157395480).

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

87509232 is a wasteful number, since it uses less digits than its factorization.

87509232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 607717 (or 607708 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 87509232 is about 9354.6369250762. The cubic root of 87509232 is about 443.9676139027.

The spelling of 87509232 in words is "eighty-seven million, five hundred nine thousand, two hundred thirty-two".