12745424 has 20 divisors (see below), whose sum is σ = 25297860. Its totient is φ = 6216960.

The previous prime is 12745399. The next prime is 12745483. The reversal of 12745424 is 42454721.

It can be written as a sum of positive squares in 2 ways, for example, as 270400 + 12475024 = 520^2 + 3532^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9059 + ... + 10370.

It is an arithmetic number, because the mean of its divisors is an integer number (1264893).

Almost surely, 2^12745424 is an apocalyptic number.

It is an amenable number.

12745424 is a deficient number, since it is larger than the sum of its proper divisors (12552436).

12745424 is a wasteful number, since it uses less digits than its factorization.

12745424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19478 (or 19472 counting only the distinct ones).

The product of its digits is 8960, while the sum is 29.

The square root of 12745424 is about 3570.0733886014. The cubic root of 12745424 is about 233.5884846078.

The spelling of 12745424 in words is "twelve million, seven hundred forty-five thousand, four hundred twenty-four".