13844140 has 24 divisors (see below), whose sum is σ = 29145312. Its totient is φ = 5523840.

The previous prime is 13844123. The next prime is 13844153. The reversal of 13844140 is 4144831.

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, 12072 + ... + 13168.

It is an arithmetic number, because the mean of its divisors is an integer number (1214388).

Almost surely, 2^13844140 is an apocalyptic number.

13844140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13844140 is an abundant number, since it is smaller than the sum of its proper divisors (15301172).

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

13844140 is a wasteful number, since it uses less digits than its factorization.

13844140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1737 (or 1735 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 13844140 is about 3720.7714253902. The cubic root of 13844140 is about 240.1164943712.

Adding to 13844140 its reverse (4144831), we get a palindrome (17988971).

The spelling of 13844140 in words is "thirteen million, eight hundred forty-four thousand, one hundred forty".