87204812 has 12 divisors (see below), whose sum is σ = 153959736. Its totient is φ = 43216320.

The previous prime is 87204809. The next prime is 87204841. The reversal of 87204812 is 21840278.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 96014 + ... + 96917.

It is an arithmetic number, because the mean of its divisors is an integer number (12829978).

Almost surely, 2^87204812 is an apocalyptic number.

It is an amenable number.

87204812 is a deficient number, since it is larger than the sum of its proper divisors (66754924).

87204812 is a wasteful number, since it uses less digits than its factorization.

87204812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193048 (or 193046 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 32.

The square root of 87204812 is about 9338.3516746801. The cubic root of 87204812 is about 443.4522029728.

The spelling of 87204812 in words is "eighty-seven million, two hundred four thousand, eight hundred twelve".