Search a number
deficient n.  and  pronic n.

First numbers that belong to both sets:

2, 110, 182, 506, 1406, 1892, 2162, 2756, 3422, 3782, 4556, 5402, 6806, 7310, 8930, 9506, 11342, 11990, 14042, 14762, 17030, 17822, 18632, 20306, 21170, 22052, 22952, 24806, 26732, 27722, 29756, 31862, 32942, 36290, 37442, 41006, 42230, 44732, 46010, 47306, 51302, 52670, 54056, 56882, 58322, 62750, 64262, 68906, 72092, 77006, 80372, 83810, 85556, 89102, 90902, 96410, 98282, 100172, 104006, 109892, 111890, 113906, 120062, 128522, 130682, 139502, 146306, 150932, 155630, 158006, 162812, 165242, 167690, 175142, 177662, 185330, 187922, 190532, 195806, 198470, 203852, 209306, 217622, 228962, 231842, 237656, 243542, 252506, 258572, 264710, 267806, 274052, 277202, 280370, 289982, 293222, 299756, 306362, 309692, 316406, 319790, 323192, 333506, 343982, 347510, 351056, 358202, 361802, 376382, 387506, 391250, 395012, 398792, 402590, 417962, 425756, 433622, 437582, 445556, 453602, 457652, 465806, 478172, 482330, 486506, 499142, 503390, 516242, 520562, 533630, 538022, 551306, 555770, 564752, 573806, 587522, 596756, 606062, 610742, 620156, 629642, 634412, 644006, 653672, 668306, 678152, 683102, 688070, 703082, 708122, 728462, 733592, 743906, 749090, 770006, 780572, 785882, 796556, 807302, 812702, 823556, 834482, 851006, 856550, 878906, 895862, 918722, 924482, 941870, 947702, 953552, 965306, 971210, 995006, 1007012, 1013042, 1019090, 1025156, 1037342, 1043462, 1055756, 1061930, 1068122, 1086806, 1099352, 1105652, 1111970, 1118306, 1137422, 1143830, 1169642, 1189190, 1195742, 1202312, 1215506, 1228772, 1242110, 1248806, 1262252, 1269002, 1275770, 1282556, 1296182, 1303022, 1323650, 1330562, 1351406, 1372412, 1379450, 1386506, 1407782, 1422056, 1436402, 1443602, 1472582, 1494506, 1509212, 1531406, 1546292, 1553762, 1561250, 1583822, 1591382, 1614170, 1629452, 1644806, 1652510, 1667972, 1683506, 1699112, 1706942, 1738442, 1746362, 1762256, 1778222, 1802306, 1810370, 1818452, 1834670, 1842806, 1867322, 1875530, 1900262, 1908542, 1925156, 1933490, 1941842, 1950212, 1967006, 1975430, 1992332, 2009306, 2026352, 2034902, 2052056, 2069282, 2077922, 2095256, 2103950, 2112662, 2147690, 2156492, 2183006, 2209682, 2218610, 2227556, 2245502, 2254502, 2281610, 2290682, 2299772, 2318006, 2345492, 2354690, 2363906, 2382392, 2391662, 2400950, 2410256, 2428922.

Some larger examples :