12748226 has 8 divisors (see below), whose sum is σ = 19781820. Its totient is φ = 6154288.

The previous prime is 12748217. The next prime is 12748231. The reversal of 12748226 is 62284721.

It can be written as a sum of positive squares in 2 ways, for example, as 11055625 + 1692601 = 3325^2 + 1301^2 .

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

It is a super-2 number, since 2×12748226² = 325034532294152, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12748192 and 12748201.

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, 109841 + ... + 109956.

Almost surely, 2^12748226 is an apocalyptic number.

12748226 is a deficient number, since it is larger than the sum of its proper divisors (7033594).

12748226 is a wasteful number, since it uses less digits than its factorization.

12748226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219828.

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

The square root of 12748226 is about 3570.4657959432. The cubic root of 12748226 is about 233.6056009987.

The spelling of 12748226 in words is "twelve million, seven hundred forty-eight thousand, two hundred twenty-six".