13256404 has 12 divisors (see below), whose sum is σ = 26512864. Its totient is φ = 5681304.

The previous prime is 13256401. The next prime is 13256417. The reversal of 13256404 is 40465231.

13256404 is an admirable number.

It is a super-2 number, since 2×13256404² = 351464494022432, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13256401) 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, 236694 + ... + 236749.

Almost surely, 2^13256404 is an apocalyptic number.

13256404 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

13256404 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13256404 is a wasteful number, since it uses less digits than its factorization.

13256404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 473454 (or 473452 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 13256404 is about 3640.9344954283. The cubic root of 13256404 is about 236.6692913372.

The spelling of 13256404 in words is "thirteen million, two hundred fifty-six thousand, four hundred four".