12428293 has 2 divisors, whose sum is σ = 12428294. Its totient is φ = 12428292.

The previous prime is 12428287. The next prime is 12428321. The reversal of 12428293 is 39282421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6749604 + 5678689 = 2598^2 + 2383^2 .

It is a cyclic number.

It is not a de Polignac number, because 12428293 - 2⁹ = 12427781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12428203) by changing a digit.

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 as a sum of consecutive naturals, namely, 6214146 + 6214147.

It is an arithmetic number, because the mean of its divisors is an integer number (6214147).

Almost surely, 2^12428293 is an apocalyptic number.

It is an amenable number.

12428293 is a deficient number, since it is larger than the sum of its proper divisors (1).

12428293 is an equidigital number, since it uses as much as digits as its factorization.

12428293 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6912, while the sum is 31.

The square root of 12428293 is about 3525.3784194041. The cubic root of 12428293 is about 231.6348111631.

It can be divided in two parts, 12428 and 293, that added together give a palindrome (12721).

The spelling of 12428293 in words is "twelve million, four hundred twenty-eight thousand, two hundred ninety-three".