12688326 has 80 divisors (see below), whose sum is σ = 33175296. Its totient is φ = 3549744.

The previous prime is 12688303. The next prime is 12688343. The reversal of 12688326 is 62388621.

12688326 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 75895 + ... + 76061.

Almost surely, 2^12688326 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12688326, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16587648).

12688326 is an abundant number, since it is smaller than the sum of its proper divisors (20486970).

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

12688326 is a wasteful number, since it uses less digits than its factorization.

12688326 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255 (or 246 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 12688326 is about 3562.0676579762. The cubic root of 12688326 is about 233.2391461125.

The spelling of 12688326 in words is "twelve million, six hundred eighty-eight thousand, three hundred twenty-six".