13204139 has 24 divisors (see below), whose sum is σ = 15459840. Its totient is φ = 11243232.

The previous prime is 13204123. The next prime is 13204157. The reversal of 13204139 is 93140231.

It is not a de Polignac number, because 13204139 - 2⁴ = 13204123 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13204199) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 167102 + ... + 167180.

It is an arithmetic number, because the mean of its divisors is an integer number (644160).

Almost surely, 2^13204139 is an apocalyptic number.

13204139 is a deficient number, since it is larger than the sum of its proper divisors (2255701).

13204139 is a wasteful number, since it uses less digits than its factorization.

13204139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171 (or 158 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 13204139 is about 3633.7499914001. The cubic root of 13204139 is about 236.3578491007.

The spelling of 13204139 in words is "thirteen million, two hundred four thousand, one hundred thirty-nine".