12688996 has 24 divisors (see below), whose sum is σ = 22790880. Its totient is φ = 6179712.

The previous prime is 12688993. The next prime is 12689003. The reversal of 12688996 is 69988621.

It is a happy number.

It is a super-2 number, since 2×12688996² = 322021238976032, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12688993) 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 7 ways as a sum of consecutive naturals, for example, 30075 + ... + 30493.

It is an arithmetic number, because the mean of its divisors is an integer number (949620).

Almost surely, 2^12688996 is an apocalyptic number.

It is an amenable number.

12688996 is a deficient number, since it is larger than the sum of its proper divisors (10101884).

12688996 is a wasteful number, since it uses less digits than its factorization.

12688996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 603 (or 601 counting only the distinct ones).

The product of its digits is 373248, while the sum is 49.

The square root of 12688996 is about 3562.1617032358. The cubic root of 12688996 is about 233.2432513948.

The spelling of 12688996 in words is "twelve million, six hundred eighty-eight thousand, nine hundred ninety-six".