13120144 has 40 divisors (see below), whose sum is σ = 26426880. Its totient is φ = 6306048.

The previous prime is 13120139. The next prime is 13120153. The reversal of 13120144 is 44102131.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

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, 54777 + ... + 55015.

It is an arithmetic number, because the mean of its divisors is an integer number (660672).

Almost surely, 2^13120144 is an apocalyptic number.

It is an amenable number.

13120144 is an abundant number, since it is smaller than the sum of its proper divisors (13306736).

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

13120144 is a wasteful number, since it uses less digits than its factorization.

13120144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 367 (or 361 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 13120144 is about 3622.1739328751. The cubic root of 13120144 is about 235.8556044789.

Adding to 13120144 its reverse (44102131), we get a palindrome (57222275).

The spelling of 13120144 in words is "thirteen million, one hundred twenty thousand, one hundred forty-four".