public class Main {
	public static void main(String[] args) {
		int count = 0, index = 0;
		while (count < 2023) {
			index++;
			if (check(index, 2) && check(index, 8) && check(index, 10) && check(index, 16)) {
				count++;
			}
		}
		System.out.println(index);
	}

	static boolean check(int n, int x) {
		int mod = 0;
		//将n转化为x进制的字符串
		String s = Integer.toString(n, x);
		for (int i = s.length() - 1; i >= 0; i--) {
			//截取字符串每一位，并且求和
			mod += Integer.valueOf(String.valueOf(s.charAt(i)), x);
		}
		return n%mod==0;
	}
}