13868144 has 10 divisors (see below), whose sum is σ = 26869560. Its totient is φ = 6934064.

The previous prime is 13868131. The next prime is 13868159. The reversal of 13868144 is 44186831.

13868144 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 433364 + ... + 433395.

It is an arithmetic number, because the mean of its divisors is an integer number (2686956).

Almost surely, 2^13868144 is an apocalyptic number.

It is an amenable number.

13868144 is a deficient number, since it is larger than the sum of its proper divisors (13001416).

13868144 is an equidigital number, since it uses as much as digits as its factorization.

13868144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 866767 (or 866761 counting only the distinct ones).

The product of its digits is 18432, while the sum is 35.

The square root of 13868144 is about 3723.9957035421. The cubic root of 13868144 is about 240.2551915222.

The spelling of 13868144 in words is "thirteen million, eight hundred sixty-eight thousand, one hundred forty-four".