12956228 has 12 divisors (see below), whose sum is σ = 22720572. Its totient is φ = 6464640.

The previous prime is 12956191. The next prime is 12956249. The reversal of 12956228 is 82265921.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 6646084 + 6310144 = 2578^2 + 2512^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1025 + ... + 5192.

It is an arithmetic number, because the mean of its divisors is an integer number (1893381).

Almost surely, 2^12956228 is an apocalyptic number.

It is an amenable number.

12956228 is a deficient number, since it is larger than the sum of its proper divisors (9764344).

12956228 is a wasteful number, since it uses less digits than its factorization.

12956228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6742 (or 6740 counting only the distinct ones).

The product of its digits is 17280, while the sum is 35.

The square root of 12956228 is about 3599.4760729862. The cubic root of 12956228 is about 234.8692678627.

The spelling of 12956228 in words is "twelve million, nine hundred fifty-six thousand, two hundred twenty-eight".