12822216 has 64 divisors (see below), whose sum is σ = 37039680. Its totient is φ = 3655680.

The previous prime is 12822203. The next prime is 12822269. The reversal of 12822216 is 61222821.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a nude number because it is divisible by every one of its digits.

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 in 15 ways as a sum of consecutive naturals, for example, 3060 + ... + 5916.

It is an arithmetic number, because the mean of its divisors is an integer number (578745).

Almost surely, 2^12822216 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12822216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18519840).

12822216 is an abundant number, since it is smaller than the sum of its proper divisors (24217464).

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

12822216 is a wasteful number, since it uses less digits than its factorization.

12822216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2894 (or 2890 counting only the distinct ones).

The product of its digits is 768, while the sum is 24.

The square root of 12822216 is about 3580.8121983706. The cubic root of 12822216 is about 234.0566741241.

It can be divided in two parts, 12 and 822216, that added together give a palindrome (822228).

The spelling of 12822216 in words is "twelve million, eight hundred twenty-two thousand, two hundred sixteen".