12322818 has 24 divisors (see below), whose sum is σ = 27205308. Its totient is φ = 4029792.

The previous prime is 12322787. The next prime is 12322819. The reversal of 12322818 is 81822321.

It can be written as a sum of positive squares in 2 ways, for example, as 12089529 + 233289 = 3477^2 + 483^2 .

It is a super-2 number, since 2×12322818² = 303703686922248, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12322791 and 12322800.

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

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5505 + ... + 7412.

Almost surely, 2^12322818 is an apocalyptic number.

12322818 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

12322818 is an abundant number, since it is smaller than the sum of its proper divisors (14882490).

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

12322818 is a wasteful number, since it uses less digits than its factorization.

12322818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12978 (or 12975 counting only the distinct ones).

The product of its digits is 1536, while the sum is 27.

The square root of 12322818 is about 3510.3871581351. The cubic root of 12322818 is about 230.9776781714.

The spelling of 12322818 in words is "twelve million, three hundred twenty-two thousand, eight hundred eighteen".