12322128 has 180 divisors, whose sum is σ = 41390208. Its totient is φ = 3144960.

The previous prime is 12322109. The next prime is 12322169. The reversal of 12322128 is 82122321.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 397473 + ... + 397503.

Almost surely, 2^12322128 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 12322128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20695104).

12322128 is an abundant number, since it is smaller than the sum of its proper divisors (29068080).

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

12322128 is a wasteful number, since it uses less digits than its factorization.

12322128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82 (or 56 counting only the distinct ones).

The product of its digits is 384, while the sum is 21.

The square root of 12322128 is about 3510.2888770014. The cubic root of 12322128 is about 230.9733669938.

Adding to 12322128 its reverse (82122321), we get a palindrome (94444449).

The spelling of 12322128 in words is "twelve million, three hundred twenty-two thousand, one hundred twenty-eight".