13657056 has 48 divisors (see below), whose sum is σ = 40973184. Its totient is φ = 3901824.

The previous prime is 13657051. The next prime is 13657087. The reversal of 13657056 is 65075631.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13657051) 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, 9490 + ... + 10833.

It is an arithmetic number, because the mean of its divisors is an integer number (853608).

Almost surely, 2^13657056 is an apocalyptic number.

13657056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

13657056 is an abundant number, since it is smaller than the sum of its proper divisors (27316128).

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

13657056 is a wasteful number, since it uses less digits than its factorization.

13657056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20343 (or 20335 counting only the distinct ones).

The product of its (nonzero) digits is 18900, while the sum is 33.

The square root of 13657056 is about 3695.5454265913. The cubic root of 13657056 is about 239.0299735404.

The spelling of 13657056 in words is "thirteen million, six hundred fifty-seven thousand, fifty-six".