13205144 has 32 divisors (see below), whose sum is σ = 25520400. Its totient is φ = 6403200.

The previous prime is 13205131. The next prime is 13205147. The reversal of 13205144 is 44150231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13205147) 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 7 ways as a sum of consecutive naturals, for example, 47534 + ... + 47810.

Almost surely, 2^13205144 is an apocalyptic number.

It is an amenable number.

13205144 is a deficient number, since it is larger than the sum of its proper divisors (12315256).

13205144 is a wasteful number, since it uses less digits than its factorization.

13205144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 443 (or 439 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 13205144 is about 3633.8882756629. Note that the first 3 decimals coincide. The cubic root of 13205144 is about 236.3638455440.

Adding to 13205144 its reverse (44150231), we get a palindrome (57355375).

The spelling of 13205144 in words is "thirteen million, two hundred five thousand, one hundred forty-four".