13216956 has 48 divisors (see below), whose sum is σ = 33175296. Its totient is φ = 4080384.

The previous prime is 13216921. The next prime is 13216963. The reversal of 13216956 is 65961231.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13185 + ... + 14151.

It is an arithmetic number, because the mean of its divisors is an integer number (691152).

Almost surely, 2^13216956 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13216956, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16587648).

13216956 is an abundant number, since it is smaller than the sum of its proper divisors (19958340).

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

13216956 is a wasteful number, since it uses less digits than its factorization.

13216956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1058 (or 1056 counting only the distinct ones).

The product of its digits is 9720, while the sum is 33.

The square root of 13216956 is about 3635.5131687287. The cubic root of 13216956 is about 236.4343003531.

The spelling of 13216956 in words is "thirteen million, two hundred sixteen thousand, nine hundred fifty-six".