13105444 has 24 divisors (see below), whose sum is σ = 25200000. Its totient is φ = 5914080.

The previous prime is 13105439. The next prime is 13105481. The reversal of 13105444 is 44450131.

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

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 5557 + ... + 7555.

It is an arithmetic number, because the mean of its divisors is an integer number (1050000).

Almost surely, 2^13105444 is an apocalyptic number.

It is an amenable number.

13105444 is a deficient number, since it is larger than the sum of its proper divisors (12094556).

13105444 is a wasteful number, since it uses less digits than its factorization.

13105444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2163 (or 2161 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 13105444 is about 3620.1441960231. The cubic root of 13105444 is about 235.7674862121.

Adding to 13105444 its reverse (44450131), we get a palindrome (57555575).

The spelling of 13105444 in words is "thirteen million, one hundred five thousand, four hundred forty-four".