Sorting orderBy on a simple array of values?

Question

Angular

It would seem a simple task, but everywhere in the examples sorting an array of objects.
I need to sort a simple array of values. Here is an example:

function TodoCtrl($scope) {
  $scope.todos = [ 3, 5, 1, 8, 2 ];   // Простые числа
}

Below - orderBy: item - doesn't work.

<div ng-app>
  <div ng-controller="TodoCtrl">
    <div ng-repeat="item in todos | orderBy: item">  /* Как отсортировать числа ?  */
      <p> {{item}} </p>
    </div>
  </div>
</div>