import java.util.*;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        long n = sc.nextLong() * 2;
        long left = 0;
        long right = (long)(Math.sqrt(Long.MAX_VALUE)) - 1;
        while (right - left > 1) {
            long m = (left + right) / 2;
            if (m * (m + 1) <= n) {
                left = m;
            } else {
                right = m;
            }
        }
        if (left * (left + 1) == n) {
            System.out.println("YES");
            System.out.println(left);
        } else {
            System.out.println("NO");
        }
    }
}