12428226 has 24 divisors (see below), whose sum is σ = 27657084. Its totient is φ = 4030560.

The previous prime is 12428219. The next prime is 12428233. The reversal of 12428226 is 62282421.

It is a happy number.

12428226 is a `hidden beast` number, since 12 + 428 + 226 = 666.

It is an interprime number because it is at equal distance from previous prime (12428219) and next prime (12428233).

It can be written as a sum of positive squares in 2 ways, for example, as 12425625 + 2601 = 3525^2 + 51^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 12428226.

It is an unprimeable number.

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 in 11 ways as a sum of consecutive naturals, for example, 8665 + ... + 9996.

Almost surely, 2^12428226 is an apocalyptic number.

12428226 is an abundant number, since it is smaller than the sum of its proper divisors (15228858).

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

12428226 is a wasteful number, since it uses less digits than its factorization.

12428226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18706 (or 18703 counting only the distinct ones).

The product of its digits is 3072, while the sum is 27.

The square root of 12428226 is about 3525.3689168653. The cubic root of 12428226 is about 231.6343949204.

The spelling of 12428226 in words is "twelve million, four hundred twenty-eight thousand, two hundred twenty-six".