12457912 has 8 divisors (see below), whose sum is σ = 23358600. Its totient is φ = 6228952.

The previous prime is 12457897. The next prime is 12457919. The reversal of 12457912 is 21975421.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12457919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 778612 + ... + 778627.

It is an arithmetic number, because the mean of its divisors is an integer number (2919825).

Almost surely, 2^12457912 is an apocalyptic number.

It is an amenable number.

12457912 is a deficient number, since it is larger than the sum of its proper divisors (10900688).

12457912 is a wasteful number, since it uses less digits than its factorization.

12457912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1557245 (or 1557241 counting only the distinct ones).

The product of its digits is 5040, while the sum is 31.

The square root of 12457912 is about 3529.5767451636. The cubic root of 12457912 is about 231.8186752031.

The spelling of 12457912 in words is "twelve million, four hundred fifty-seven thousand, nine hundred twelve".