13443644 has 12 divisors (see below), whose sum is σ = 23646000. Its totient is φ = 6687648.

The previous prime is 13443643. The next prime is 13443671. The reversal of 13443644 is 44634431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13443643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7649 + ... + 9240.

It is an arithmetic number, because the mean of its divisors is an integer number (1970500).

Almost surely, 2^13443644 is an apocalyptic number.

It is an amenable number.

13443644 is a deficient number, since it is larger than the sum of its proper divisors (10202356).

13443644 is a wasteful number, since it uses less digits than its factorization.

13443644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17092 (or 17090 counting only the distinct ones).

The product of its digits is 13824, while the sum is 29.

The square root of 13443644 is about 3666.5575135268. The cubic root of 13443644 is about 237.7783639184.

The spelling of 13443644 in words is "thirteen million, four hundred forty-three thousand, six hundred forty-four".