Special numbers

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace _25.MasterNumbers
{
    class Program
    {
        static void Main(string[] args)
        {
            int num = int.Parse(Console.ReadLine());

            for (int i = 1; i <= num; i++)
            {

                if (IsPalindrome(i.ToString())&& SumOfDigits(i) && HoldEvenDigits(i.ToString()))
                {
                    Console.WriteLine(i);
                }

            }



        }

        static bool HoldEvenDigits(string num)
        {
            for (int i = 0; i < num.Length; i++)
            {
                if (num[i] % 2 == 0)
                {
                    return true;
                }

            }
            return false;

        }

        static bool SumOfDigits(int n)
        {
            int sum = 0;
            while (n != 0)
            {
                sum += n % 10;
                n /= 10;
            }
            if (sum % 7==0)
            {
                return true;
            }
            else
            {
                return false;
            }
        }

        public static bool IsPalindrome(string value)
        {
            int min = 0;
            int max = value.Length - 1;
            while (true)
            {
                if (min > max)
                {
                    return true;
                }
                char a = value[min];
                char b = value[max];
                if (char.ToLower(a) != char.ToLower(b))
                {
                    return false;
                }
                min++;
                max--;
            }
        }
    }
}