stdin

function unhash(target){
    var letters = "acdegilmnoprstuw";
    var str = "";
    var max = letters.length;

    while(target > 7) {
        var mod = target % 37;
        if (mod > max)
            throw new Exception("This isn't a valid hash!");
        str = letters[mod] + str;
        target = (target - mod) / 37;
    }

    return str;
}

console.log(unhash(956446786872726));