#include <iostream>
using namespace std;
int main(){
  int n;cin>>n;
  int ans = 0;
  for(int i = 1; n >= i*i; i++){
    if(n%i == 0 && (i) == ((n/i)&(i))){
      int size = 1;
      int nw = 1;
      while(nw<n/i){
        nw*=2;
        size++;
      }
      auto bi = __builtin_popcount(i);
      //or: n/i 
      //xor i 
      ans += (1<<(bi-1));
    }
  }
  cout << ans << endl;
}