13256013 has 16 divisors (see below), whose sum is σ = 18063360. Its totient is φ = 8645424.

The previous prime is 13255999. The next prime is 13256029. The reversal of 13256013 is 31065231.

It is not a de Polignac number, because 13256013 - 2⁸ = 13255757 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13254013) 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 15 ways as a sum of consecutive naturals, for example, 34420 + ... + 34802.

It is an arithmetic number, because the mean of its divisors is an integer number (1128960).

Almost surely, 2^13256013 is an apocalyptic number.

It is an amenable number.

13256013 is a deficient number, since it is larger than the sum of its proper divisors (4807347).

13256013 is a wasteful number, since it uses less digits than its factorization.

13256013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 608.

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 13256013 is about 3640.8808000263. The cubic root of 13256013 is about 236.6669644467. Note that the first 3 decimals are identical.

The spelling of 13256013 in words is "thirteen million, two hundred fifty-six thousand, thirteen".