12457864 has 16 divisors (see below), whose sum is σ = 23622300. Its totient is φ = 6158592.

The previous prime is 12457859. The next prime is 12457871. The reversal of 12457864 is 46875421.

12457864 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 9253764 + 3204100 = 3042^2 + 1790^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8037 + ... + 9460.

Almost surely, 2^12457864 is an apocalyptic number.

It is an amenable number.

12457864 is a deficient number, since it is larger than the sum of its proper divisors (11164436).

12457864 is a wasteful number, since it uses less digits than its factorization.

12457864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17592 (or 17588 counting only the distinct ones).

The product of its digits is 53760, while the sum is 37.

The square root of 12457864 is about 3529.5699454749. The cubic root of 12457864 is about 231.8183774724.

The spelling of 12457864 in words is "twelve million, four hundred fifty-seven thousand, eight hundred sixty-four".