#include <iostream.h>
long int n;
int d, k, max, nr;
int main() {
  nr = max = 0;
  cin >> n;
  for (int i = 1; i <= n; i++) {
    k = 1;
    d = 1;
    while (d <= i / 2) {
      if (i % d == 0)
        k++;
      d++;
    }
    if (k > max) {
      nr = i;
      max = k;
    }
  }
  cout << nr << endl;
  system("pause");
  return 0;
}