13966144 has 28 divisors (see below), whose sum is σ = 28309824. Its totient is φ = 6833024.

The previous prime is 13966103. The next prime is 13966153. The reversal of 13966144 is 44166931.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 687 + ... + 5329.

Almost surely, 2^13966144 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 13966144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14154912).

13966144 is an abundant number, since it is smaller than the sum of its proper divisors (14343680).

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

13966144 is an equidigital number, since it uses as much as digits as its factorization.

13966144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4702 (or 4692 counting only the distinct ones).

The product of its digits is 15552, while the sum is 34.

The square root of 13966144 is about 3737.1304499576. The cubic root of 13966144 is about 240.8197891780.

The spelling of 13966144 in words is "thirteen million, nine hundred sixty-six thousand, one hundred forty-four".