12857306 has 24 divisors (see below), whose sum is σ = 24476256. Its totient is φ = 5008920.

The previous prime is 12857297. The next prime is 12857333. The reversal of 12857306 is 60375821.

It is a happy number.

It is a Curzon 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 11 ways as a sum of consecutive naturals, for example, 4886 + ... + 7041.

It is an arithmetic number, because the mean of its divisors is an integer number (1019844).

Almost surely, 2^12857306 is an apocalyptic number.

12857306 is a deficient number, since it is larger than the sum of its proper divisors (11618950).

12857306 is a wasteful number, since it uses less digits than its factorization.

12857306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11954 (or 11947 counting only the distinct ones).

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

The square root of 12857306 is about 3585.7085771155. The cubic root of 12857306 is about 234.2699905526.

The spelling of 12857306 in words is "twelve million, eight hundred fifty-seven thousand, three hundred six".