12688296 has 16 divisors (see below), whose sum is σ = 31720800. Its totient is φ = 4229424.

The previous prime is 12688243. The next prime is 12688297. The reversal of 12688296 is 69288621.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (12688297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 264316 + ... + 264363.

It is an arithmetic number, because the mean of its divisors is an integer number (1982550).

Almost surely, 2^12688296 is an apocalyptic number.

It is an amenable number.

12688296 is an abundant number, since it is smaller than the sum of its proper divisors (19032504).

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

12688296 is a wasteful number, since it uses less digits than its factorization.

12688296 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 528688 (or 528684 counting only the distinct ones).

The product of its digits is 82944, while the sum is 42.

The square root of 12688296 is about 3562.0634469363. The cubic root of 12688296 is about 233.2389622905.

The spelling of 12688296 in words is "twelve million, six hundred eighty-eight thousand, two hundred ninety-six".