12808020 has 24 divisors (see below), whose sum is σ = 35862624. Its totient is φ = 3415456.

The previous prime is 12808009. The next prime is 12808039. The reversal of 12808020 is 2080821.

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 7 ways as a sum of consecutive naturals, for example, 106674 + ... + 106793.

It is an arithmetic number, because the mean of its divisors is an integer number (1494276).

Almost surely, 2^12808020 is an apocalyptic number.

12808020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12808020 is an abundant number, since it is smaller than the sum of its proper divisors (23054604).

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

12808020 is a wasteful number, since it uses less digits than its factorization.

12808020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213479 (or 213477 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

The square root of 12808020 is about 3578.8294175610. The cubic root of 12808020 is about 233.9702643200.

Adding to 12808020 its reverse (2080821), we get a palindrome (14888841).

The spelling of 12808020 in words is "twelve million, eight hundred eight thousand, twenty".