12684788 has 18 divisors (see below), whose sum is σ = 23583126. Its totient is φ = 5968768.

The previous prime is 12684781. The next prime is 12684829. The reversal of 12684788 is 88748621.

12684788 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 5513104 + 7171684 = 2348^2 + 2678^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12684781) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4331 + ... + 6642.

Almost surely, 2^12684788 is an apocalyptic number.

It is an amenable number.

12684788 is a deficient number, since it is larger than the sum of its proper divisors (10898338).

12684788 is a wasteful number, since it uses less digits than its factorization.

12684788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11011 (or 10992 counting only the distinct ones).

The product of its digits is 172032, while the sum is 44.

The square root of 12684788 is about 3561.5710016789. The cubic root of 12684788 is about 233.2174653747.

The spelling of 12684788 in words is "twelve million, six hundred eighty-four thousand, seven hundred eighty-eight".