[Hekumok]

var sec = 1728 ;
var h = sec/3600 ^ 0 ;
var m = (sec-h*3600)/60 ^ 0 ;
var s = sec-h*3600-m*60 ;
alert((h<10?"0"+h:h)+" ч. "+(m<10?"0"+m:m)+" мин. "+(s<10?"0"+s:s)+" сек.") ;