13204424 has 8 divisors (see below), whose sum is σ = 24758310. Its totient is φ = 6602208.

The previous prime is 13204421. The next prime is 13204447. The reversal of 13204424 is 42440231.

It can be written as a sum of positive squares in only one way, i.e., 12376324 + 828100 = 3518^2 + 910^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 13204396 and 13204405.

It is not an unprimeable number, because it can be changed into a prime (13204421) 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 as a sum of consecutive naturals, namely, 825269 + ... + 825284.

Almost surely, 2^13204424 is an apocalyptic number.

It is an amenable number.

13204424 is a deficient number, since it is larger than the sum of its proper divisors (11553886).

13204424 is a wasteful number, since it uses less digits than its factorization.

13204424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1650559 (or 1650555 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 13204424 is about 3633.7892068748. The cubic root of 13204424 is about 236.3595496156.

Adding to 13204424 its reverse (42440231), we get a palindrome (55644655).

The spelling of 13204424 in words is "thirteen million, two hundred four thousand, four hundred twenty-four".