12628226 has 8 divisors (see below), whose sum is σ = 20399484. Its totient is φ = 5828400.

The previous prime is 12628223. The next prime is 12628243. The reversal of 12628226 is 62282621.

It can be written as a sum of positive squares in 2 ways, for example, as 10569001 + 2059225 = 3251^2 + 1435^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (12628223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 242825 + ... + 242876.

Almost surely, 2^12628226 is an apocalyptic number.

12628226 is a deficient number, since it is larger than the sum of its proper divisors (7771258).

12628226 is a wasteful number, since it uses less digits than its factorization.

12628226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 485716.

The product of its digits is 4608, while the sum is 29.

The square root of 12628226 is about 3553.6215330280. The cubic root of 12628226 is about 232.8703067212.

The spelling of 12628226 in words is "twelve million, six hundred twenty-eight thousand, two hundred twenty-six".