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plaindrome  and  practical n.

First numbers that belong to both sets:

1, 2, 4, 6, 8, 12, 16, 18, 24, 28, 36, 48, 56, 66, 78, 88, 112, 126, 128, 144, 156, 168, 224, 228, 234, 256, 288, 336, 348, 368, 378, 448, 456, 468, 558, 588, 666, 888, 1116, 1122, 1128, 1134, 1144, 1148, 1188, 1224, 1248, 1288, 1344, 1368, 1456, 1458, 1488, 1566, 1568, 1888, 2226, 2244, 2256, 2268, 2288, 2368, 2448, 2478, 2556, 2688, 3344, 3348, 3366, 3388, 3444, 3456, 3468, 3588, 3666, 3888, 4446, 4488, 4788, 4888, 5568, 5688, 5778, 5888, 6666, 6678, 6688, 6888, 7788, 7888, 8888, 11124, 11128, 11136, 11178, 11248, 11256, 11336, 11368, 11388, 11448, 11466, 11556, 11778, 12222, 12236, 12246, 12288, 12348, 12444, 12456, 12558, 12688, 12888, 13338, 13344, 13356, 13446, 13456, 13468, 13566, 13568, 13668, 13888, 14448, 14456, 14688, 15568, 15678, 16688, 17888, 22236, 22248, 22256, 22288, 22338, 22344, 22356, 22368, 22446, 22448, 22568, 22788, 23478, 23556, 23688, 24444, 24448, 24888, 25568, 25578, 25668, 25688, 26688, 27888, 33456, 33488, 33558, 34578, 34668, 34788, 34888, 35568, 35588, 36666, 36888, 37888, 44688, 45568, 45588, 45668, 45888, 48888, 55566, 55568, 57888, 67788, 77778, 78888, 111136, 111144, 111168, 111188, 111222, 111228, 111244, 111248, 111356, 111366, 111456, 111488, 111568, 111888, 112224, 112266, 112288, 112336, 112344, 112448, 112488, 112788, 113344, 113448, 113568, 113778, 114444, 114448, 114456, 114678, 114688, 115566, 115568, 115668, 116688, 116788, 117888, 118888, 122248, 122256, 122268, 122368, 122388, 122668, 122688, 122778, 123336, 123348, 123444, 123488, 123888, 124488, 125568, 125888, 126666, 126688, 126888, 127788, 133344, 133456, 133458, 133488, 133588, 133668, 134456, 134478, 134568, 134688, 135558, 135888, 137788, 137888, 144448, 144456, 144666, 145888, 146688, 146888, 147888, 155556, 155568, 155688, 157788, 166668, 166788, 167778, 168888, 177888, 222222, 222224, 222256, 222288, 222336, 222444, 222456, 222488, 222588, 222888, 223344, 223368, 223468.

Some larger examples :