From the five numbers 1, 6, 36, 216, and 1296, some numbers can be obtained by taking one number at a time or summing several different numbers. Arrange these numbers from small to large, what is the 28th number?
从l，6，36，216，1296这五个数中，每次取一个数或者取若干个不同的数求和，可以得到一些数．将这些数从小到大排列，第28个数是多少．
<gadget id="calculator">36 + 216 + 1_296</gadget>
<output>1_548</output>

<result>1_548</result>