12281326 has 8 divisors (see below), whose sum is σ = 19057320. Its totient is φ = 5928888.

The previous prime is 12281323. The next prime is 12281329. The reversal of 12281326 is 62318221.

It is an interprime number because it is at equal distance from previous prime (12281323) and next prime (12281329).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 12281326.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12281323) 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, 105816 + ... + 105931.

It is an arithmetic number, because the mean of its divisors is an integer number (2382165).

Almost surely, 2^12281326 is an apocalyptic number.

12281326 is a deficient number, since it is larger than the sum of its proper divisors (6775994).

12281326 is a wasteful number, since it uses less digits than its factorization.

12281326 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211778.

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

The square root of 12281326 is about 3504.4722855232. The cubic root of 12281326 is about 230.7181460200.

Adding to 12281326 its reverse (62318221), we get a palindrome (74599547).

The spelling of 12281326 in words is "twelve million, two hundred eighty-one thousand, three hundred twenty-six".