13544144 has 20 divisors (see below), whose sum is σ = 26381124. Its totient is φ = 6736128.

The previous prime is 13544143. The next prime is 13544149. The reversal of 13544144 is 44144531.

It is a happy number.

13544144 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 11022400 + 2521744 = 3320^2 + 1588^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13544143) 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, 1004 + ... + 5300.

Almost surely, 2^13544144 is an apocalyptic number.

It is an amenable number.

13544144 is a deficient number, since it is larger than the sum of its proper divisors (12836980).

13544144 is a wasteful number, since it uses less digits than its factorization.

13544144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4502 (or 4496 counting only the distinct ones).

The product of its digits is 3840, while the sum is 26.

The square root of 13544144 is about 3680.2369488934. The cubic root of 13544144 is about 238.3694096149.

Adding to 13544144 its reverse (44144531), we get a palindrome (57688675).

The spelling of 13544144 in words is "thirteen million, five hundred forty-four thousand, one hundred forty-four".