13331944 has 32 divisors (see below), whose sum is σ = 26671680. Its totient is φ = 6225664.

The previous prime is 13331921. The next prime is 13331957. The reversal of 13331944 is 44913331.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22419 + ... + 23005.

It is an arithmetic number, because the mean of its divisors is an integer number (833490).

Almost surely, 2^13331944 is an apocalyptic number.

It is an amenable number.

13331944 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

13331944 is a wasteful number, since it uses less digits than its factorization.

13331944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 777 (or 773 counting only the distinct ones).

The product of its digits is 3888, while the sum is 28.

The square root of 13331944 is about 3651.2934694434. The cubic root of 13331944 is about 237.1179838292.

The spelling of 13331944 in words is "thirteen million, three hundred thirty-one thousand, nine hundred forty-four".