13204404 has 24 divisors (see below), whose sum is σ = 34233920. Its totient is φ = 4401432.

The previous prime is 13204381. The next prime is 13204409. The reversal of 13204404 is 40440231.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13204409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61024 + ... + 61239.

Almost surely, 2^13204404 is an apocalyptic number.

It is an amenable number.

13204404 is an abundant number, since it is smaller than the sum of its proper divisors (21029516).

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

13204404 is a wasteful number, since it uses less digits than its factorization.

13204404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122276 (or 122268 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 13204404 is about 3633.7864549255. The cubic root of 13204404 is about 236.3594302820.

Adding to 13204404 its reverse (40440231), we get a palindrome (53644635).

The spelling of 13204404 in words is "thirteen million, two hundred four thousand, four hundred four".