13643256 has 32 divisors (see below), whose sum is σ = 37209600. Its totient is φ = 4134240.

The previous prime is 13643243. The next prime is 13643261. The reversal of 13643256 is 65234631.

13643256 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×13643256² = 372276868563072, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25576 + ... + 26103.

It is an arithmetic number, because the mean of its divisors is an integer number (1162800).

Almost surely, 2^13643256 is an apocalyptic number.

It is an amenable number.

13643256 is an abundant number, since it is smaller than the sum of its proper divisors (23566344).

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

13643256 is a wasteful number, since it uses less digits than its factorization.

13643256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51699 (or 51695 counting only the distinct ones).

The product of its digits is 12960, while the sum is 30.

The square root of 13643256 is about 3693.6778419348. The cubic root of 13643256 is about 238.9494357997.

Adding to 13643256 its reverse (65234631), we get a palindrome (78877887).

The spelling of 13643256 in words is "thirteen million, six hundred forty-three thousand, two hundred fifty-six".