12783812 has 24 divisors (see below), whose sum is σ = 23296896. Its totient is φ = 6133088.

The previous prime is 12783773. The next prime is 12783817. The reversal of 12783812 is 21838721.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12783817) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9323 + ... + 10605.

It is an arithmetic number, because the mean of its divisors is an integer number (970704).

Almost surely, 2^12783812 is an apocalyptic number.

It is an amenable number.

12783812 is a deficient number, since it is larger than the sum of its proper divisors (10513084).

12783812 is a wasteful number, since it uses less digits than its factorization.

12783812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1387 (or 1385 counting only the distinct ones).

The product of its digits is 5376, while the sum is 32.

The square root of 12783812 is about 3575.4457064819. The cubic root of 12783812 is about 233.8227649582.

The spelling of 12783812 in words is "twelve million, seven hundred eighty-three thousand, eight hundred twelve".