13656256 has 56 divisors (see below), whose sum is σ = 28569920. Its totient is φ = 6469632.

The previous prime is 13656217. The next prime is 13656259. The reversal of 13656256 is 65265631.

It is a zygodrome in base 5.

It is not an unprimeable number, because it can be changed into a prime (13656259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 172825 + ... + 172903.

Almost surely, 2^13656256 is an apocalyptic number.

13656256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13656256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14284960).

13656256 is an abundant number, since it is smaller than the sum of its proper divisors (14913664).

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

13656256 is an equidigital number, since it uses as much as digits as its factorization.

13656256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201 (or 191 counting only the distinct ones).

The product of its digits is 32400, while the sum is 34.

The square root of 13656256 is about 3695.4371865856. The cubic root of 13656256 is about 239.0253061677.

It can be divided in two parts, 1365625 and 6, that added together give a palindrome (1365631).

The spelling of 13656256 in words is "thirteen million, six hundred fifty-six thousand, two hundred fifty-six".