13616256 has 64 divisors (see below), whose sum is σ = 36842400. Its totient is φ = 4454400.

The previous prime is 13616249. The next prime is 13616257. The reversal of 13616256 is 65261631.

It is a tau number, because it is divible by the number of its divisors (64).

It is not an unprimeable number, because it can be changed into a prime (13616257) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22356 + ... + 22956.

Almost surely, 2^13616256 is an apocalyptic number.

13616256 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 13616256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18421200).

13616256 is an abundant number, since it is smaller than the sum of its proper divisors (23226144).

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

13616256 is an equidigital number, since it uses as much as digits as its factorization.

13616256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 677 (or 665 counting only the distinct ones).

The product of its digits is 6480, while the sum is 30.

The square root of 13616256 is about 3690.0211381508. The cubic root of 13616256 is about 238.7917047474.

Adding to 13616256 its reverse (65261631), we get a palindrome (78877887).

It can be divided in two parts, 1361625 and 6, that added together give a palindrome (1361631).

The spelling of 13616256 in words is "thirteen million, six hundred sixteen thousand, two hundred fifty-six".