87644832 has 48 divisors (see below), whose sum is σ = 250985952. Its totient is φ = 26558720.

The previous prime is 87644827. The next prime is 87644849. The reversal of 87644832 is 23844678.

It is a tau number, because it is divible by the number of its divisors (48).

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40443 + ... + 42554.

It is an arithmetic number, because the mean of its divisors is an integer number (5228874).

Almost surely, 2^87644832 is an apocalyptic number.

It is an amenable number.

87644832 is an abundant number, since it is smaller than the sum of its proper divisors (163341120).

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

87644832 is a wasteful number, since it uses less digits than its factorization.

87644832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83021 (or 83013 counting only the distinct ones).

The product of its digits is 258048, while the sum is 42.

The square root of 87644832 is about 9361.8818621044. The cubic root of 87644832 is about 444.1968123482.

The spelling of 87644832 in words is "eighty-seven million, six hundred forty-four thousand, eight hundred thirty-two".