12308228 has 6 divisors (see below), whose sum is σ = 21539406. Its totient is φ = 6154112.

The previous prime is 12308227. The next prime is 12308237. The reversal of 12308228 is 82280321.

It can be written as a sum of positive squares in only one way, i.e., 11957764 + 350464 = 3458^2 + 592^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12308197 and 12308206.

It is not an unprimeable number, because it can be changed into a prime (12308227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1538525 + ... + 1538532.

It is an arithmetic number, because the mean of its divisors is an integer number (3589901).

Almost surely, 2^12308228 is an apocalyptic number.

It is an amenable number.

12308228 is a deficient number, since it is larger than the sum of its proper divisors (9231178).

12308228 is a wasteful number, since it uses less digits than its factorization.

12308228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3077061 (or 3077059 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 12308228 is about 3508.3084242980. The cubic root of 12308228 is about 230.8864843337.

Adding to 12308228 its reverse (82280321), we get a palindrome (94588549).

The spelling of 12308228 in words is "twelve million, three hundred eight thousand, two hundred twenty-eight".