12809132 has 12 divisors (see below), whose sum is σ = 25618320. Its totient is φ = 5489616.

The previous prime is 12809131. The next prime is 12809149. The reversal of 12809132 is 23190821.

12809132 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (12809131) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 228707 + ... + 228762.

It is an arithmetic number, because the mean of its divisors is an integer number (2134860).

Almost surely, 2^12809132 is an apocalyptic number.

It is an amenable number.

12809132 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

12809132 is a wasteful number, since it uses less digits than its factorization.

12809132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 457480 (or 457478 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 12809132 is about 3578.9847722504. The cubic root of 12809132 is about 233.9770352704.

Adding to 12809132 its reverse (23190821), we get a palindrome (35999953).

The spelling of 12809132 in words is "twelve million, eight hundred nine thousand, one hundred thirty-two".