13113644 has 12 divisors (see below), whose sum is σ = 23013984. Its totient is φ = 6538224.

The previous prime is 13113643. The next prime is 13113671. The reversal of 13113644 is 44631131.

It is not an unprimeable number, because it can be changed into a prime (13113643) 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, 2999 + ... + 5934.

It is an arithmetic number, because the mean of its divisors is an integer number (1917832).

Almost surely, 2^13113644 is an apocalyptic number.

It is an amenable number.

13113644 is a deficient number, since it is larger than the sum of its proper divisors (9900340).

13113644 is a wasteful number, since it uses less digits than its factorization.

13113644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9304 (or 9302 counting only the distinct ones).

The product of its digits is 864, while the sum is 23.

The square root of 13113644 is about 3621.2765704928. The cubic root of 13113644 is about 235.8166487410.

Adding to 13113644 its reverse (44631131), we get a palindrome (57744775).

The spelling of 13113644 in words is "thirteen million, one hundred thirteen thousand, six hundred forty-four".