12688884 has 72 divisors (see below), whose sum is σ = 36385440. Its totient is φ = 3696192.

The previous prime is 12688877. The next prime is 12688909. The reversal of 12688884 is 48888621.

It is a happy number.

It is a super-2 number, since 2×12688884² = 322015554330912, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8179 + ... + 9605.

Almost surely, 2^12688884 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12688884, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18192720).

12688884 is an abundant number, since it is smaller than the sum of its proper divisors (23696556).

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

12688884 is a wasteful number, since it uses less digits than its factorization.

12688884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1469 (or 1464 counting only the distinct ones).

The product of its digits is 196608, while the sum is 45.

The square root of 12688884 is about 3562.1459824100. The cubic root of 12688884 is about 233.2425651487.

The spelling of 12688884 in words is "twelve million, six hundred eighty-eight thousand, eight hundred eighty-four".