12784226 has 32 divisors (see below), whose sum is σ = 24850560. Its totient is φ = 4790016.

The previous prime is 12784217. The next prime is 12784229. The reversal of 12784226 is 62248721.

It is a junction number, because it is equal to n+sod(n) for n = 12784192 and 12784201.

It is not an unprimeable number, because it can be changed into a prime (12784229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1610 + ... + 5306.

It is an arithmetic number, because the mean of its divisors is an integer number (776580).

Almost surely, 2^12784226 is an apocalyptic number.

12784226 is a deficient number, since it is larger than the sum of its proper divisors (12066334).

12784226 is a wasteful number, since it uses less digits than its factorization.

12784226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3738.

The product of its digits is 10752, while the sum is 32.

The square root of 12784226 is about 3575.5036008932. The cubic root of 12784226 is about 233.8252890249.

The spelling of 12784226 in words is "twelve million, seven hundred eighty-four thousand, two hundred twenty-six".