12806013 has 16 divisors (see below), whose sum is σ = 18706752. Its totient is φ = 7728000.

The previous prime is 12805993. The next prime is 12806041. The reversal of 12806013 is 31060821.

It is not a de Polignac number, because 12806013 - 2⁸ = 12805757 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12806113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8583 + ... + 9963.

It is an arithmetic number, because the mean of its divisors is an integer number (1169172).

Almost surely, 2^12806013 is an apocalyptic number.

It is an amenable number.

12806013 is a deficient number, since it is larger than the sum of its proper divisors (5900739).

12806013 is a wasteful number, since it uses less digits than its factorization.

12806013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1676.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 12806013 is about 3578.5490076287. The cubic root of 12806013 is about 233.9580427367.

Adding to 12806013 its reverse (31060821), we get a palindrome (43866834).

The spelling of 12806013 in words is "twelve million, eight hundred six thousand, thirteen".