13011444 has 72 divisors (see below), whose sum is σ = 34594560. Its totient is φ = 4118400.

The previous prime is 13011437. The next prime is 13011463. The reversal of 13011444 is 44411031.

13011444 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 99259 + ... + 99389.

It is an arithmetic number, because the mean of its divisors is an integer number (480480).

Almost surely, 2^13011444 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 13011444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17297280).

13011444 is an abundant number, since it is smaller than the sum of its proper divisors (21583116).

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

13011444 is a wasteful number, since it uses less digits than its factorization.

13011444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261 (or 256 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 13011444 is about 3607.1379236176. The cubic root of 13011444 is about 235.2024451363.

Adding to 13011444 its reverse (44411031), we get a palindrome (57422475).

The spelling of 13011444 in words is "thirteen million, eleven thousand, four hundred forty-four".