12782222 has 8 divisors (see below), whose sum is σ = 19535256. Its totient is φ = 6270472.

The previous prime is 12782219. The next prime is 12782233. The reversal of 12782222 is 22228721.

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

12782222 is a modest number, since divided by 2222 gives 1278 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 12782191 and 12782200.

It is a congruent number.

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, 60188 + ... + 60399.

It is an arithmetic number, because the mean of its divisors is an integer number (2441907).

Almost surely, 2^12782222 is an apocalyptic number.

12782222 is a deficient number, since it is larger than the sum of its proper divisors (6753034).

12782222 is a wasteful number, since it uses less digits than its factorization.

12782222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120642.

The product of its digits is 1792, while the sum is 26.

The square root of 12782222 is about 3575.2233496664. The cubic root of 12782222 is about 233.8130705726.

The spelling of 12782222 in words is "twelve million, seven hundred eighty-two thousand, two hundred twenty-two".