13604144 has 20 divisors (see below), whose sum is σ = 26415720. Its totient is φ = 6787200.

The previous prime is 13604117. The next prime is 13604167. The reversal of 13604144 is 44140631.

13604144 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12419 + ... + 13469.

It is an arithmetic number, because the mean of its divisors is an integer number (1320786).

Almost surely, 2^13604144 is an apocalyptic number.

It is an amenable number.

13604144 is a deficient number, since it is larger than the sum of its proper divisors (12811576).

13604144 is a wasteful number, since it uses less digits than its factorization.

13604144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1868 (or 1862 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 13604144 is about 3688.3795900097. The cubic root of 13604144 is about 238.7208800134.

Adding to 13604144 its reverse (44140631), we get a palindrome (57744775).

The spelling of 13604144 in words is "thirteen million, six hundred four thousand, one hundred forty-four".