void main(){
  import std.stdio, std.string, std.conv, std.algorithm;

  long n; rd(n);

  // i*(i+1)/2

  auto ok=0L, ng=to!(long)(2*1e9);
  while(ng-ok>1){
    auto m=(ng+ok)/2;
    m*(m+1)/2>n ? ng : ok = m;
  }

  if(ok*(ok+1)/2==n){writeln("YES"); writeln(ok);}
  else writeln("NO");

}
void rd(T...)(ref T x){
  import std.stdio, std.string, std.conv;
  auto l=readln.split;
  assert(l.length==x.length);
  foreach(i, ref e; x){
    e=l[i].to!(typeof(e));
  }
}