13312404 has 48 divisors (see below), whose sum is σ = 39446400. Its totient is φ = 3803328.

The previous prime is 13312399. The next prime is 13312433. The reversal of 13312404 is 40421331.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8049 + ... + 9560.

It is an arithmetic number, because the mean of its divisors is an integer number (821800).

Almost surely, 2^13312404 is an apocalyptic number.

13312404 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

13312404 is an abundant number, since it is smaller than the sum of its proper divisors (26133996).

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

13312404 is a wasteful number, since it uses less digits than its factorization.

13312404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17629 (or 17621 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 13312404 is about 3648.6167241847. The cubic root of 13312404 is about 237.0020829812.

Adding to 13312404 its reverse (40421331), we get a palindrome (53733735).

The spelling of 13312404 in words is "thirteen million, three hundred twelve thousand, four hundred four".