13978744 has 32 divisors (see below), whose sum is σ = 28390320. Its totient is φ = 6414336.

The previous prime is 13978739. The next prime is 13978747. The reversal of 13978744 is 44787931.

13978744 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 13978744.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13978747) 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, 26467 + ... + 26989.

Almost surely, 2^13978744 is an apocalyptic number.

It is an amenable number.

13978744 is an abundant number, since it is smaller than the sum of its proper divisors (14411576).

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

13978744 is a wasteful number, since it uses less digits than its factorization.

13978744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 799 (or 795 counting only the distinct ones).

The product of its digits is 169344, while the sum is 43.

The square root of 13978744 is about 3738.8158553210. The cubic root of 13978744 is about 240.8921884815.

The spelling of 13978744 in words is "thirteen million, nine hundred seventy-eight thousand, seven hundred forty-four".