13307444 has 6 divisors (see below), whose sum is σ = 23288034. Its totient is φ = 6653720.

The previous prime is 13307431. The next prime is 13307449. The reversal of 13307444 is 44470331.

It can be written as a sum of positive squares in only one way, i.e., 7728400 + 5579044 = 2780^2 + 2362^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13307449) 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 as a sum of consecutive naturals, namely, 1663427 + ... + 1663434.

It is an arithmetic number, because the mean of its divisors is an integer number (3881339).

Almost surely, 2^13307444 is an apocalyptic number.

It is an amenable number.

13307444 is a deficient number, since it is larger than the sum of its proper divisors (9980590).

13307444 is a wasteful number, since it uses less digits than its factorization.

13307444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3326865 (or 3326863 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 26.

The square root of 13307444 is about 3647.9369512095. The cubic root of 13307444 is about 236.9726448633.

Adding to 13307444 its reverse (44470331), we get a palindrome (57777775).

The spelling of 13307444 in words is "thirteen million, three hundred seven thousand, four hundred forty-four".