12783222 has 36 divisors (see below), whose sum is σ = 28657980. Its totient is φ = 4118040.

The previous prime is 12783217. The next prime is 12783223. The reversal of 12783222 is 22238721.

It is a happy number.

12783222 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12783223) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 16929 + ... + 17667.

It is an arithmetic number, because the mean of its divisors is an integer number (796055).

Almost surely, 2^12783222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12783222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14328990).

12783222 is an abundant number, since it is smaller than the sum of its proper divisors (15874758).

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

12783222 is a wasteful number, since it uses less digits than its factorization.

12783222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 809 (or 775 counting only the distinct ones).

The product of its digits is 2688, while the sum is 27.

The square root of 12783222 is about 3575.3631983338. The cubic root of 12783222 is about 233.8191677643.

The spelling of 12783222 in words is "twelve million, seven hundred eighty-three thousand, two hundred twenty-two".