12557308 has 6 divisors (see below), whose sum is σ = 21975296. Its totient is φ = 6278652.

The previous prime is 12557297. The next prime is 12557317. The reversal of 12557308 is 80375521.

It is a self number, because there is not a number n which added to its sum of digits gives 12557308.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1569660 + ... + 1569667.

Almost surely, 2^12557308 is an apocalyptic number.

It is an amenable number.

12557308 is a deficient number, since it is larger than the sum of its proper divisors (9417988).

12557308 is a wasteful number, since it uses less digits than its factorization.

12557308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3139331 (or 3139329 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 12557308 is about 3543.6292131091. The cubic root of 12557308 is about 232.4335679474.

The spelling of 12557308 in words is "twelve million, five hundred fifty-seven thousand, three hundred eight".