21118446180

Names of 21118446180

• Cardinal: 21118446180 can be written as Twenty-one billion, one hundred eighteen million, four hundred forty-six thousand, one hundred eighty.

Scientific notation

• Scientific notation: 2.111844618 × 10¹⁰

Factors of 21118446180

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 558

Divisors of 21118446180

• Number of divisors d(n): 432
• Complete list of divisors:
  1 2 3 4 5 6 9 10 12 13 15 17 18 20 26 30 34 36 39 45 51 52 60 65 68 78 85 90 97 102 117 130 153 156 169 170 180 194 195 204 221 234 255 260 291 306 338 340 388 390 421 442 468 485 507 510 582 585 612 663 676 765 780 842 845 873 884 970 1014 1020 1105 1164 1170 1261 1263 1326 1455 1521 1530 1649 1684 1690 1746 1940 1989 2028 2105 2210 2340 2522 2526 2535 2652 2873 2910 3042 3060 3298 3315 3380 3492 3783 3789 3978 4210 4365 4420 4947 5044 5052 5070 5473 5746 5820 6084 6305 6315 6596 6630 7157 7566 7578 7605 7956 8245 8420 8619 8730 9894 9945 10140 10946 11349 11492 12610 12630 13260 14314 14365 14841 15132 15156 15210 16393 16419 16490 17238 17460 18915 18945 19788 19890 21437 21471 21892 22698 24735 25220 25260 25857 27365 28628 28730 29682 30420 32786 32838 32980 34476 35785 37830 37890 39780 40837 42874 42942 43095 45396 49179 49257 49470 51714 54730 56745 57460 59364 64311 64413 65572 65676 71149 71570 74205 75660 75780 81674 81965 82095 85748 85884 86190 93041 98358 98514 98940 103428 107185 107355 109460 113490 122511 128622 128826 129285 142298 143140 147537 148410 163348 163930 164190 172380 186082 192933 196716 197028 204185 213447 214370 214710 226980 245022 245895 246285 257244 257652 258570 278681 279123 284596 295074 296820 321555 322065 327860 328380 355745 367533 372164 385866 408370 426894 428740 429420 465205 490044 491790 492570 517140 530881 557362 558246 590148 612555 640341 643110 644130 694229 711490 735066 737685 771732 816740 836043 837369 853788 930410 964665 983580 985140 1061762 1067235 1114724 1116492 1209533 1225110 1280682 1286220 1288260 1388458 1393405 1395615 1422980 1470132 1475370 1592643 1672086 1674738 1837665 1860820 1929330 2082687 2123524 2134470 2419066 2450220 2508129 2561364 2654405 2776916 2786810 2791230 2950740 3185286 3201705 3344172 3349476 3471145 3628599 3675330 3858660 4165374 4180215 4186845 4268940 4777929 4838132 5016258 5308810 5573620 5582460 6047665 6248061 6370572 6403410 6901453 6942290 7257198 7350660 7963215 8330748 8360430 8373690 9024977 9555858 10032516 10413435 10617620 10885797 12095330 12496122 12540645 12806820 13802906 13884580 14514396 15926430 16720860 16747380 18049954 18142995 19111716 20704359 20826870 21771594 23889645 24190660 24992244 25081290 27074931 27605812 31240305 31852860 34507265 36099908 36285990 41408718 41653740 43543188 45124885 47779290 50162580 54149862 54428985 62113077 62480610 69014530 72571980 81224793 82817436 90249770 95558580 103521795 108299724 108857970 117324701 124226154 124961220 135374655 138029060 162449586 180499540 207043590 217715940 234649402 248452308 270749310 310565385 324899172 351974103 406123965 414087180 469298804 541498620 586623505 621130770 703948206 812247930 1055922309 1173247010 1242261540 1407896412 1624495860 1759870515 2111844618 2346494020 3519741030 4223689236 5279611545 7039482060 10559223090 21118446180
• Sum of all divisors σ(n): 74379758544
• Sum of proper divisors (its aliquot sum) s(n): 53261312364
• 21118446180 is an abundant number, because the sum of its proper divisors (53261312364) is greater than itself. Its abundance is 32142866184

Bases of 21118446180

• Binary: 10011101010110000011110101001100100₂
• Hexadecimal: 0x4EAC1EA64
• Base-36: 9P9DLD0

Squares and roots of 21118446180

• 21118446180 squared (21118446180²) is 445988769057556592400
• 21118446180 cubed (21118446180³) is 9418589816226458218903597032000
• The square root of 21118446180 is 145321.8709623573
• The cube root of 21118446180 is 2764.1015027547

Scales and comparisons

• 21,118,446,180 seconds is equal to 671 years, 26 weeks, 11 hours, 3 minutes.
• To count from 1 to 21,118,446,180 would take you about one thousand, three hundred forty-three years!

  This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)

• A cube with a volume of 21118446180 cubic inches would be around 230.3 feet tall.

Recreational maths with 21118446180

• 21118446180 backwards is 08164481112
• 21118446180 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21118446180's digits is 36
• More coming soon!