13044564 has 120 divisors (see below), whose sum is σ = 38894240. Its totient is φ = 3779136.

The previous prime is 13044557. The next prime is 13044569. The reversal of 13044564 is 46544031.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13044569) 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 39 ways as a sum of consecutive naturals, for example, 79947 + ... + 80109.

Almost surely, 2^13044564 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13044564, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19447120).

13044564 is an abundant number, since it is smaller than the sum of its proper divisors (25849676).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13044564 is a wasteful number, since it uses less digits than its factorization.

13044564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211 (or 200 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 13044564 is about 3611.7259032213. The cubic root of 13044564 is about 235.4018415217.

Adding to 13044564 its reverse (46544031), we get a palindrome (59588595).

The spelling of 13044564 in words is "thirteen million, forty-four thousand, five hundred sixty-four".