12688396 has 12 divisors (see below), whose sum is σ = 25376848. Its totient is φ = 5437872.

The previous prime is 12688391. The next prime is 12688411. The reversal of 12688396 is 69388621.

12688396 is an admirable number.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (12688391) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 226551 + ... + 226606.

Almost surely, 2^12688396 is an apocalyptic number.

It is an amenable number.

12688396 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

12688396 is a wasteful number, since it uses less digits than its factorization.

12688396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 453168 (or 453166 counting only the distinct ones).

The product of its digits is 124416, while the sum is 43.

The square root of 12688396 is about 3562.0774837165. The cubic root of 12688396 is about 233.2395750294.

The spelling of 12688396 in words is "twelve million, six hundred eighty-eight thousand, three hundred ninety-six".