13204145 has 16 divisors (see below), whose sum is σ = 16822080. Its totient is φ = 9921600.

The previous prime is 13204123. The next prime is 13204157. The reversal of 13204145 is 54140231.

It is a de Polignac number, because none of the positive numbers 2^k-13204145 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 11915 + ... + 12975.

It is an arithmetic number, because the mean of its divisors is an integer number (1051380).

Almost surely, 2^13204145 is an apocalyptic number.

It is an amenable number.

13204145 is a deficient number, since it is larger than the sum of its proper divisors (3617935).

13204145 is a wasteful number, since it uses less digits than its factorization.

13204145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1216.

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

The square root of 13204145 is about 3633.7508169934. The cubic root of 13204145 is about 236.3578849013.

Adding to 13204145 its reverse (54140231), we get a palindrome (67344376).

The spelling of 13204145 in words is "thirteen million, two hundred four thousand, one hundred forty-five".