12756222 has 24 divisors (see below), whose sum is σ = 29264976. Its totient is φ = 4001856.

The previous prime is 12756203. The next prime is 12756229. The reversal of 12756222 is 22265721.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12756229) 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 in 11 ways as a sum of consecutive naturals, for example, 20538 + ... + 21149.

It is an arithmetic number, because the mean of its divisors is an integer number (1219374).

Almost surely, 2^12756222 is an apocalyptic number.

12756222 is an abundant number, since it is smaller than the sum of its proper divisors (16508754).

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

12756222 is a wasteful number, since it uses less digits than its factorization.

12756222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41712 (or 41709 counting only the distinct ones).

The product of its digits is 3360, while the sum is 27.

The square root of 12756222 is about 3571.5853622726. The cubic root of 12756222 is about 233.6544318448.

The spelling of 12756222 in words is "twelve million, seven hundred fifty-six thousand, two hundred twenty-two".