12322816 has 48 divisors (see below), whose sum is σ = 26928720. Its totient is φ = 5591040.

The previous prime is 12322787. The next prime is 12322819. The reversal of 12322816 is 61822321.

12322816 is nontrivially palindromic in base 15.

It is not an unprimeable number, because it can be changed into a prime (12322819) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22255 + ... + 22801.

It is an arithmetic number, because the mean of its divisors is an integer number (561015).

Almost surely, 2^12322816 is an apocalyptic number.

12322816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12322816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13464360).

12322816 is an abundant number, since it is smaller than the sum of its proper divisors (14605904).

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

12322816 is an equidigital number, since it uses as much as digits as its factorization.

12322816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 580 (or 560 counting only the distinct ones).

The product of its digits is 1152, while the sum is 25.

The square root of 12322816 is about 3510.3868732663. The cubic root of 12322816 is about 230.9776656755.

The spelling of 12322816 in words is "twelve million, three hundred twenty-two thousand, eight hundred sixteen".