Edit in JSFiddle

angular.module('app', [])

    .controller('ctrl', ['$scope', function ($scope) {
        $scope.no = 200000000;
    }])

    .filter('formatnumber', function () {
        return function (input) {
            return input.toString().replace(/\B(?=(\d{3})+(?!\d))/g, ",");
        };
    });

<div ng-app="app" ng-controller="ctrl">{{no | formatnumber}}</div>