12280326 has 8 divisors (see below), whose sum is σ = 24560664. Its totient is φ = 4093440.

The previous prime is 12280271. The next prime is 12280343. The reversal of 12280326 is 62308221.

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

12280326 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 12280296 and 12280305.

It is a congruent 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 3 ways as a sum of consecutive naturals, for example, 1023355 + ... + 1023366.

It is an arithmetic number, because the mean of its divisors is an integer number (3070083).

Almost surely, 2^12280326 is an apocalyptic number.

12280326 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

12280326 is a wasteful number, since it uses less digits than its factorization.

12280326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2046726.

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 12280326 is about 3504.3296077852. The cubic root of 12280326 is about 230.7118838186.

Adding to 12280326 its reverse (62308221), we get a palindrome (74588547).

The spelling of 12280326 in words is "twelve million, two hundred eighty thousand, three hundred twenty-six".