12256422 has 32 divisors (see below), whose sum is σ = 26220672. Its totient is φ = 3805824.

The previous prime is 12256421. The next prime is 12256423. The reversal of 12256422 is 22465221.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12256421) and next prime (12256423).

It is a junction number, because it is equal to n+sod(n) for n = 12256392 and 12256401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12256421) 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 in 15 ways as a sum of consecutive naturals, for example, 10353 + ... + 11475.

It is an arithmetic number, because the mean of its divisors is an integer number (819396).

Almost surely, 2^12256422 is an apocalyptic number.

12256422 is an abundant number, since it is smaller than the sum of its proper divisors (13964250).

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

12256422 is a wasteful number, since it uses less digits than its factorization.

12256422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1252.

The product of its digits is 1920, while the sum is 24.

The square root of 12256422 is about 3500.9173083636. The cubic root of 12256422 is about 230.5620908606.

The spelling of 12256422 in words is "twelve million, two hundred fifty-six thousand, four hundred twenty-two".