87109632 has 156 divisors (see below), whose sum is σ = 268337160. Its totient is φ = 27131904.

The previous prime is 87109621. The next prime is 87109667. The reversal of 87109632 is 23690178.

87109632 is a `hidden beast` number, since 8 + 7 + 10 + 9 + 632 = 666.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 626619 + ... + 626757.

It is an arithmetic number, because the mean of its divisors is an integer number (1720110).

Almost surely, 2^87109632 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 87109632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (134168580).

87109632 is an abundant number, since it is smaller than the sum of its proper divisors (181227528).

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

87109632 is a wasteful number, since it uses less digits than its factorization.

87109632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186 (or 161 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 87109632 is about 9333.2540949017. The cubic root of 87109632 is about 443.2908084160.

The spelling of 87109632 in words is "eighty-seven million, one hundred nine thousand, six hundred thirty-two".