12428286 has 16 divisors (see below), whose sum is σ = 26768784. Its totient is φ = 3824064.

The previous prime is 12428279. The next prime is 12428287. The reversal of 12428286 is 68282421.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12428287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79591 + ... + 79746.

It is an arithmetic number, because the mean of its divisors is an integer number (1673049).

Almost surely, 2^12428286 is an apocalyptic number.

12428286 is an abundant number, since it is smaller than the sum of its proper divisors (14340498).

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

12428286 is a wasteful number, since it uses less digits than its factorization.

12428286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159355.

The product of its digits is 12288, while the sum is 33.

The square root of 12428286 is about 3525.3774266027. The cubic root of 12428286 is about 231.6347676752.

The spelling of 12428286 in words is "twelve million, four hundred twenty-eight thousand, two hundred eighty-six".