12856113 has 12 divisors (see below), whose sum is σ = 18627700. Its totient is φ = 8544096.

The previous prime is 12856099. The next prime is 12856133. The reversal of 12856113 is 31165821.

It can be written as a sum of positive squares in 2 ways, for example, as 7436529 + 5419584 = 2727^2 + 2328^2 .

It is not a de Polignac number, because 12856113 - 2¹³ = 12847921 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12856133) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1095 + ... + 5187.

Almost surely, 2^12856113 is an apocalyptic number.

It is an amenable number.

12856113 is a deficient number, since it is larger than the sum of its proper divisors (5771587).

12856113 is a wasteful number, since it uses less digits than its factorization.

12856113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4448 (or 4445 counting only the distinct ones).

The product of its digits is 1440, while the sum is 27.

The square root of 12856113 is about 3585.5422184099. The cubic root of 12856113 is about 234.2627445364.

The spelling of 12856113 in words is "twelve million, eight hundred fifty-six thousand, one hundred thirteen".