13320404 has 24 divisors (see below), whose sum is σ = 24698688. Its totient is φ = 6272640.

The previous prime is 13320397. The next prime is 13320409. The reversal of 13320404 is 40402331.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13320409) 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, 5084 + ... + 7244.

It is an arithmetic number, because the mean of its divisors is an integer number (1029112).

Almost surely, 2^13320404 is an apocalyptic number.

It is an amenable number.

13320404 is a deficient number, since it is larger than the sum of its proper divisors (11378284).

13320404 is a wasteful number, since it uses less digits than its factorization.

13320404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2255 (or 2253 counting only the distinct ones).

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

The square root of 13320404 is about 3649.7128654183. The cubic root of 13320404 is about 237.0495484125.

Adding to 13320404 its reverse (40402331), we get a palindrome (53722735).

The spelling of 13320404 in words is "thirteen million, three hundred twenty thousand, four hundred four".