13204340 has 12 divisors (see below), whose sum is σ = 27729156. Its totient is φ = 5281728.

The previous prime is 13204339. The next prime is 13204361. The reversal of 13204340 is 4340231.

It can be written as a sum of positive squares in 2 ways, for example, as 2062096 + 11142244 = 1436^2 + 3338^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 330089 + ... + 330128.

It is an arithmetic number, because the mean of its divisors is an integer number (2310763).

Almost surely, 2^13204340 is an apocalyptic number.

13204340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13204340 is an abundant number, since it is smaller than the sum of its proper divisors (14524816).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13204340 is a wasteful number, since it uses less digits than its factorization.

13204340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 660226 (or 660224 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 13204340 is about 3633.7776486736. Note that the first 3 decimals coincide. The cubic root of 13204340 is about 236.3590484137.

Adding to 13204340 its reverse (4340231), we get a palindrome (17544571).

The spelling of 13204340 in words is "thirteen million, two hundred four thousand, three hundred forty".