12320724 has 24 divisors (see below), whose sum is σ = 30960160. Its totient is φ = 3790944.

The previous prime is 12320713. The next prime is 12320731. The reversal of 12320724 is 42702321.

It is a self number, because there is not a number n which added to its sum of digits gives 12320724.

It is a congruent number.

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, 39334 + ... + 39645.

Almost surely, 2^12320724 is an apocalyptic number.

It is an amenable number.

12320724 is an abundant number, since it is smaller than the sum of its proper divisors (18639436).

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

12320724 is a wasteful number, since it uses less digits than its factorization.

12320724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78999 (or 78997 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 12320724 is about 3510.0888877634. The cubic root of 12320724 is about 230.9645941875.

The spelling of 12320724 in words is "twelve million, three hundred twenty thousand, seven hundred twenty-four".