Search a number
powerful n.  and  uban n.

First numbers that belong to both sets:

1, 8, 9, 16, 25, 27, 32, 36, 49, 72, 81, 1000000, 2000000, 5000000, 8000000, 9000000, 10000000, 16000000, 18000000, 20000000, 25000000, 27000000, 32000000, 36000000, 39000025, 40000000, 45000000, 49000000, 50000000, 72000000, 80000000, 81000000, 90000000, 98000000, 1000000000, 1058000000, 1080000000, 1089000000, 2000000000, 2025000000, 2048000000, 3025000000, 3042000000, 3087000000, 5000000000, 5041000000, 6050000000, 6075000000, 7056000000, 8000000000, 9000000000, 9025000000, 10000000000, 10001000025, 10082000000, 11025000000, 11045000000, 12005000000, 13005000000, 13068000000, 16000000000, 18000000000, 18050000000, 20000000000, 21025000000, 22050000000, 22090000000, 23040000000, 25000000000, 25088000000, 26010000000, 27000000000, 27040000000, 28090000000, 30003000075, 32000000000, 32041000000, 33075000000, 36000000000, 38025000000, 38088000000, 39015000000, 40000000000, 40002000025, 41067000000, 42025000000, 42050000000, 45000000000, 46080000000, 47045000000, 47089000000, 48020000000, 48050000000, 49000000000, 49005000000, 50000000000, 51005000000, 51076000000, 52020000000, 53045000000, 58081000000, 59049000000, 60025000000, 61009000000, 62001000000, 63001000000, 65025000000, 66049000000, 67081000000, 72000000000, 73008000000, 75076000000, 76050000000, 78030000000, 79092000000, 80000000000, 80089000000, 81000000000, 83006000000, 87025000000, 89042000000, 90000000000, 90003000025, 93025000000, 95048000000, 96040000000, 98000000000, 98010000000, 1000000000000, 1000002000001, 1000006000009, 1000008000016, 1000010000025, 1000012000036, 1000018000081, 1002001000000, 1006009000000, 1008005000000, 1008016000000, 1010025000000, 1011042000000, 1012036000000, 1013060000000, 1017005000000, 1018081000000, 1026045000000, 1031048000000, 1057058000000, 1058000000000, 1067089000000, 1080000000000, 1089000000000, 1092025000000, 1095030000000, 2000000000000, 2000008000008, 2000016000032, 2005056000000, 2007040000000, 2008008000000, 2012018000000, 2016010000000, 2016032000000, 2020050000000, 2025000000000, 2027052000000, 2028098000000, 2042041000000, 2043040000000, 2048000000000, 2052090000000, 2062096000000, 2087008000000, 2088025000000, 2093045000000, 2093058000000, 3000012000012, 3000030000075, 3003040000000, 3011058000000, 3012012000000, 3025000000000, 3030075000000, 3031081000000, 3036010000000, 3038049000000, 3042000000000, 3045025000000, 3047040000000, 3052009000000, 3058090000000, 3059001000000, 3066001000000, 3073009000000, 3080025000000, 3087000000000, 3087049000000, 3090098000000, 3095072000000, 5000000000000, 5010005000000, 5020020000000, 5022081000000, 5030045000000, 5031049000000, 5040025000000, 5040080000000, 5041000000000, 5049009000000, 5058001000000, 5067001000000, 5070039000075, 5076009000000, 5085025000000, 5088050000000, 6006080000000, 6017045000000, 6027025000000, 6028020000000, 6039005000000, 6050000000000, 6061005000000, 6072020000000, 6075000000000, 6076098000000, 6083045000000, 6083072000000, 6086089000000, 6090050000000, 6097032000000, 7049025000000, 7056000000000, 8000000000000, 8000016000008, 8000032000032, 8000048000072, 8008002000000, 8008065000000, 8016008000000, 8032032000000, 8040050000000, 8046090000000, 8048072000000, 8056098000000, 8082010000000, 9000000000000, 9000006000001, 9000018000009, 9000030000025, 9000036000036, 9000042000049, 9006001000000, 9006010000000, 9018009000000, 9025000000000, 9030025000000, 9036036000000, 9042030000000, 9042049000000, 9063040000000, 9072045000000, 9082090000000, 9099005000000, 10000000000000, 10020010000000, 10040040000000, 10060090000000, 10062098000000, 10071072000000, 10080050000000, 10082000000000, 10089032000000, 10098018000000, 11017080000000, 11022011000000, 11025000000000, 11029041000000, 11045000000000, 11046010000000, 11067040000000.

Some larger examples :