13844240 has 20 divisors (see below), whose sum is σ = 32188044. Its totient is φ = 5537664.

The previous prime is 13844227. The next prime is 13844249. The reversal of 13844240 is 4244831.

13844240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 7772944 + 6071296 = 2788^2 + 2464^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (13844249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86447 + ... + 86606.

Almost surely, 2^13844240 is an apocalyptic number.

13844240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13844240 is an abundant number, since it is smaller than the sum of its proper divisors (18343804).

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

13844240 is a wasteful number, since it uses less digits than its factorization.

13844240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173066 (or 173060 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 26.

The square root of 13844240 is about 3720.7848634394. The cubic root of 13844240 is about 240.1170725121.

The spelling of 13844240 in words is "thirteen million, eight hundred forty-four thousand, two hundred forty".