87724012 has 24 divisors (see below), whose sum is σ = 163734480. Its totient is φ = 40980480.

The previous prime is 87724009. The next prime is 87724033. The reversal of 87724012 is 21042778.

It is a super-2 number, since 2×87724012² = 15391004562752288, which contains 22 as substring.

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, 4812 + ... + 14092.

It is an arithmetic number, because the mean of its divisors is an integer number (6822270).

Almost surely, 2^87724012 is an apocalyptic number.

It is an amenable number.

87724012 is a deficient number, since it is larger than the sum of its proper divisors (76010468).

87724012 is a wasteful number, since it uses less digits than its factorization.

87724012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9441 (or 9439 counting only the distinct ones).

The product of its (nonzero) digits is 6272, while the sum is 31.

The square root of 87724012 is about 9366.1097580586. The cubic root of 87724012 is about 444.3305373554.

The spelling of 87724012 in words is "eighty-seven million, seven hundred twenty-four thousand, twelve".