12808818 has 36 divisors (see below), whose sum is σ = 30509934. Its totient is φ = 3880800.

The previous prime is 12808801. The next prime is 12808819. The reversal of 12808818 is 81880821.

It is a happy number.

12808818 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 only one way, i.e., 9018009 + 3790809 = 3003^2 + 1947^2 .

It is not an unprimeable number, because it can be changed into a prime (12808819) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 763 + ... + 5118.

Almost surely, 2^12808818 is an apocalyptic number.

12808818 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

12808818 is an abundant number, since it is smaller than the sum of its proper divisors (17701116).

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

12808818 is a wasteful number, since it uses less digits than its factorization.

12808818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5911 (or 5897 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 36.

The square root of 12808818 is about 3578.9409047929. The cubic root of 12808818 is about 233.9751233690.

The spelling of 12808818 in words is "twelve million, eight hundred eight thousand, eight hundred eighteen".