12322506 has 64 divisors (see below), whose sum is σ = 29767680. Its totient is φ = 3326400.

The previous prime is 12322451. The next prime is 12322523. The reversal of 12322506 is 60522321.

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

It is a Curzon number.

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 31 ways as a sum of consecutive naturals, for example, 81531 + ... + 81681.

It is an arithmetic number, because the mean of its divisors is an integer number (465120).

Almost surely, 2^12322506 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12322506, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14883840).

12322506 is an abundant number, since it is smaller than the sum of its proper divisors (17445174).

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

12322506 is a wasteful number, since it uses less digits than its factorization.

12322506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 12322506 is about 3510.3427183111. The cubic root of 12322506 is about 230.9757287893.

Adding to 12322506 its reverse (60522321), we get a palindrome (72844827).

The spelling of 12322506 in words is "twelve million, three hundred twenty-two thousand, five hundred six".