12809824 has 12 divisors (see below), whose sum is σ = 25219404. Its totient is φ = 6404896.

The previous prime is 12809813. The next prime is 12809843. The reversal of 12809824 is 42890821.

It is a self number, because there is not a number n which added to its sum of digits gives 12809824.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200122 + ... + 200185.

It is an arithmetic number, because the mean of its divisors is an integer number (2101617).

Almost surely, 2^12809824 is an apocalyptic number.

It is an amenable number.

12809824 is a deficient number, since it is larger than the sum of its proper divisors (12409580).

12809824 is an equidigital number, since it uses as much as digits as its factorization.

12809824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400317 (or 400309 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 34.

The square root of 12809824 is about 3579.0814464049. The cubic root of 12809824 is about 233.9812486496.

The spelling of 12809824 in words is "twelve million, eight hundred nine thousand, eight hundred twenty-four".