12457904 has 40 divisors (see below), whose sum is σ = 25519200. Its totient is φ = 5879808.

The previous prime is 12457897. The next prime is 12457919. The reversal of 12457904 is 40975421.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35522 + ... + 35870.

It is an arithmetic number, because the mean of its divisors is an integer number (637980).

Almost surely, 2^12457904 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12457904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12759600).

12457904 is an abundant number, since it is smaller than the sum of its proper divisors (13061296).

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

12457904 is a wasteful number, since it uses less digits than its factorization.

12457904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 477 (or 471 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 12457904 is about 3529.5756118831. The cubic root of 12457904 is about 231.8186255814.

The spelling of 12457904 in words is "twelve million, four hundred fifty-seven thousand, nine hundred four".