public static function formatSocialNumber($number){

		assert('is_integer($number)');

		if(!is_integer($number)) return $number;

		if($number > 10000000){

			$number = round($number / 1000000) . 'M';
		}
		elseif($number > 1000000){

			$number = round($number / 1000000, 1) . 'M';
		}
		elseif($number > 10000){

			$number = round($number / 1000) . 'K';
		}
		elseif($number > 1000){

			$number = round($number / 1000, 1) . 'K';
		}

		return $number;
	}