13006444 has 12 divisors (see below), whose sum is σ = 24830568. Its totient is φ = 5912000.

The previous prime is 13006423. The next prime is 13006447. The reversal of 13006444 is 44460031.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (13006447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 147757 + ... + 147844.

It is an arithmetic number, because the mean of its divisors is an integer number (2069214).

Almost surely, 2^13006444 is an apocalyptic number.

It is an amenable number.

13006444 is a deficient number, since it is larger than the sum of its proper divisors (11824124).

13006444 is a wasteful number, since it uses less digits than its factorization.

13006444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295616 (or 295614 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 13006444 is about 3606.4447867672. Note that the first 3 decimals coincide. The cubic root of 13006444 is about 235.1723136383.

Adding to 13006444 its reverse (44460031), we get a palindrome (57466475).

It can be divided in two parts, 1300 and 6444, that added together give a square (7744 = 88²).

The spelling of 13006444 in words is "thirteen million, six thousand, four hundred forty-four".