87999232 has 36 divisors (see below), whose sum is σ = 176989960. Its totient is φ = 43665408.

The previous prime is 87999221. The next prime is 87999257. The reversal of 87999232 is 23299978.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34348 + ... + 36820.

Almost surely, 2^87999232 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87999232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88494980).

87999232 is an abundant number, since it is smaller than the sum of its proper divisors (88990728).

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

87999232 is a wasteful number, since it uses less digits than its factorization.

87999232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2628 (or 2614 counting only the distinct ones).

The product of its digits is 489888, while the sum is 49.

The square root of 87999232 is about 9380.7905850200. The cubic root of 87999232 is about 444.7947241580.

The spelling of 87999232 in words is "eighty-seven million, nine hundred ninety-nine thousand, two hundred thirty-two".