13605044 has 12 divisors (see below), whose sum is σ = 23835168. Its totient is φ = 6795000.

The previous prime is 13605019. The next prime is 13605077. The reversal of 13605044 is 44050631.

It is a happy number.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 4919 + ... + 7169.

It is an arithmetic number, because the mean of its divisors is an integer number (1986264).

Almost surely, 2^13605044 is an apocalyptic number.

It is an amenable number.

13605044 is a deficient number, since it is larger than the sum of its proper divisors (10230124).

13605044 is a wasteful number, since it uses less digits than its factorization.

13605044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3766 (or 3764 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 13605044 is about 3688.5015927881. The cubic root of 13605044 is about 238.7261441950.

Adding to 13605044 its reverse (44050631), we get a palindrome (57655675).

The spelling of 13605044 in words is "thirteen million, six hundred five thousand, forty-four".