12809212 has 24 divisors (see below), whose sum is σ = 24248336. Its totient is φ = 5885568.

The previous prime is 12809191. The next prime is 12809221. The reversal of 12809212 is 21290821.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15883 + ... + 16669.

Almost surely, 2^12809212 is an apocalyptic number.

It is an amenable number.

12809212 is a deficient number, since it is larger than the sum of its proper divisors (11439124).

12809212 is a wasteful number, since it uses less digits than its factorization.

12809212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1117 (or 1115 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 12809212 is about 3578.9959485867. The cubic root of 12809212 is about 233.9775223740.

The spelling of 12809212 in words is "twelve million, eight hundred nine thousand, two hundred twelve".