12870724 has 6 divisors (see below), whose sum is σ = 22523774. Its totient is φ = 6435360.

The previous prime is 12870721. The next prime is 12870749. The reversal of 12870724 is 42707821.

It can be written as a sum of positive squares in only one way, i.e., 12830724 + 40000 = 3582^2 + 200^2 .

It is not an unprimeable number, because it can be changed into a prime (12870721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1608837 + ... + 1608844.

Almost surely, 2^12870724 is an apocalyptic number.

It is an amenable number.

12870724 is a deficient number, since it is larger than the sum of its proper divisors (9653050).

12870724 is a wasteful number, since it uses less digits than its factorization.

12870724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3217685 (or 3217683 counting only the distinct ones).

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

The square root of 12870724 is about 3587.5791280472. The cubic root of 12870724 is about 234.3514576412.

The spelling of 12870724 in words is "twelve million, eight hundred seventy thousand, seven hundred twenty-four".