12810832 has 10 divisors (see below), whose sum is σ = 24821018. Its totient is φ = 6405408.

The previous prime is 12810829. The next prime is 12810857. The reversal of 12810832 is 23801821.

It can be written as a sum of positive squares in only one way, i.e., 9585216 + 3225616 = 3096^2 + 1796^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12810797 and 12810806.

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, 400323 + ... + 400354.

Almost surely, 2^12810832 is an apocalyptic number.

It is an amenable number.

12810832 is a deficient number, since it is larger than the sum of its proper divisors (12010186).

12810832 is an equidigital number, since it uses as much as digits as its factorization.

12810832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 800685 (or 800679 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 25.

The square root of 12810832 is about 3579.2222618887. Note that the first 4 decimals coincide. The cubic root of 12810832 is about 233.9873857860.

The spelling of 12810832 in words is "twelve million, eight hundred ten thousand, eight hundred thirty-two".