12857296 has 20 divisors (see below), whose sum is σ = 25193700. Its totient is φ = 6355712.

The previous prime is 12857279. The next prime is 12857297. The reversal of 12857296 is 69275821.

It can be written as a sum of positive squares in 2 ways, for example, as 9000000 + 3857296 = 3000^2 + 1964^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12857297) by changing a digit.

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, 3091 + ... + 5938.

It is an arithmetic number, because the mean of its divisors is an integer number (1259685).

Almost surely, 2^12857296 is an apocalyptic number.

12857296 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12857296 is a deficient number, since it is larger than the sum of its proper divisors (12336404).

12857296 is an equidigital number, since it uses as much as digits as its factorization.

12857296 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9126 (or 9120 counting only the distinct ones).

The product of its digits is 60480, while the sum is 40.

The square root of 12857296 is about 3585.7071826907. The cubic root of 12857296 is about 234.2699298167.

The spelling of 12857296 in words is "twelve million, eight hundred fifty-seven thousand, two hundred ninety-six".