13645056 has 72 divisors (see below), whose sum is σ = 36873760. Its totient is φ = 4478976.

The previous prime is 13645043. The next prime is 13645057. The reversal of 13645056 is 65054631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13645057) 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, 83631 + ... + 83793.

Almost surely, 2^13645056 is an apocalyptic number.

13645056 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 13645056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18436880).

13645056 is an abundant number, since it is smaller than the sum of its proper divisors (23228704).

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

13645056 is a wasteful number, since it uses less digits than its factorization.

13645056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291 (or 277 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 13645056 is about 3693.9214934809. The cubic root of 13645056 is about 238.9599438014.

Adding to 13645056 its reverse (65054631), we get a palindrome (78699687).

The spelling of 13645056 in words is "thirteen million, six hundred forty-five thousand, fifty-six".