13156956 has 18 divisors (see below), whose sum is σ = 33257952. Its totient is φ = 4385640.

The previous prime is 13156937. The next prime is 13156961. The reversal of 13156956 is 65965131.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 365471 = 13156956 / (1 + 3 + 1 + 5 + 6 + 9 + 5 + 6).

It is a self number, because there is not a number n which added to its sum of digits gives 13156956.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 182700 + ... + 182771.

It is an arithmetic number, because the mean of its divisors is an integer number (1847664).

Almost surely, 2^13156956 is an apocalyptic number.

It is an amenable number.

13156956 is an abundant number, since it is smaller than the sum of its proper divisors (20100996).

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

13156956 is a wasteful number, since it uses less digits than its factorization.

13156956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365481 (or 365476 counting only the distinct ones).

The product of its digits is 24300, while the sum is 36.

The square root of 13156956 is about 3627.2518522981. The cubic root of 13156956 is about 236.0759833856.

The spelling of 13156956 in words is "thirteen million, one hundred fifty-six thousand, nine hundred fifty-six".