12806788 has 6 divisors (see below), whose sum is σ = 22411886. Its totient is φ = 6403392.

The previous prime is 12806749. The next prime is 12806861. The reversal of 12806788 is 88760821.

It can be written as a sum of positive squares in only one way, i.e., 10188864 + 2617924 = 3192^2 + 1618^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12806788.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1600845 + ... + 1600852.

Almost surely, 2^12806788 is an apocalyptic number.

It is an amenable number.

12806788 is a deficient number, since it is larger than the sum of its proper divisors (9605098).

12806788 is a wasteful number, since it uses less digits than its factorization.

12806788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3201701 (or 3201699 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 40.

The square root of 12806788 is about 3578.6572901020. The cubic root of 12806788 is about 233.9627622338.

The spelling of 12806788 in words is "twelve million, eight hundred six thousand, seven hundred eighty-eight".