21198019920

Names of 21198019920

• Cardinal: 21198019920 can be written as Twenty-one billion, one hundred ninety-eight million, nineteen thousand, nine hundred twenty.

Scientific notation

• Scientific notation: 2.119801992 × 10¹⁰

Factors of 21198019920

• Number of distinct prime factors ω(n): 8
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 1045

Divisors of 21198019920

• Number of divisors d(n): 640
• Complete list of divisors:
  1 2 3 4 5 6 7 8 10 11 12 14 15 16 20 21 22 23 24 28 30 33 35 40 42 44 46 48 53 55 56 60 66 69 70 77 80 84 88 92 105 106 110 112 115 120 132 138 140 154 159 161 165 168 176 184 210 212 220 230 231 240 253 264 265 276 280 308 318 322 330 336 345 368 371 385 420 424 440 460 462 483 506 528 530 552 560 583 616 636 644 660 690 742 759 770 795 805 840 848 880 920 924 941 966 1012 1060 1104 1113 1155 1166 1219 1232 1265 1272 1288 1320 1380 1484 1518 1540 1590 1610 1680 1749 1771 1840 1848 1855 1882 1932 2024 2120 2226 2310 2332 2415 2438 2530 2544 2576 2640 2760 2823 2915 2968 3036 3080 3180 3220 3498 3542 3657 3696 3710 3764 3795 3864 4048 4081 4240 4452 4620 4664 4705 4830 4876 5060 5313 5520 5565 5646 5830 5936 6072 6095 6160 6360 6440 6587 6996 7084 7314 7420 7528 7590 7728 8162 8533 8745 8855 8904 9240 9328 9410 9660 9752 10120 10351 10626 11130 11292 11660 12144 12190 12243 12720 12880 13174 13409 13992 14115 14168 14628 14840 15056 15180 16324 17066 17490 17710 17808 18285 18480 18820 19320 19504 19761 20240 20405 20702 21252 21643 22260 22584 23320 24380 24486 25599 26348 26565 26818 27984 28230 28336 29256 29680 30360 31053 32648 32935 34132 34980 35420 36570 37640 38640 39522 40227 40810 41404 42504 42665 43286 44520 45168 46640 48760 48972 49873 51198 51755 52696 53130 53636 56460 58512 60720 61215 62106 64929 65296 65870 67045 68264 69960 70840 72457 73140 75280 79044 80454 81620 82808 85008 85330 86572 89040 93863 97520 97944 98805 99746 102396 103510 105392 106260 107272 108215 112920 122430 124212 127995 129858 131740 134090 136528 139920 141680 144914 146280 149619 151501 155265 158088 160908 163240 165616 170660 173144 187726 195888 197610 199492 201135 204792 207020 212520 214544 216430 217371 225840 238073 244860 248424 249365 255990 259716 263480 268180 281589 289828 292560 299238 303002 310530 316176 321816 324645 326480 341320 346288 349111 362285 375452 395220 398984 402270 409584 414040 425040 432860 434742 454503 469315 476146 489720 496848 498730 511980 519432 526960 536360 548603 563178 579656 598476 606004 621060 643632 649290 682640 698222 714219 724570 748095 750904 757505 790440 797968 804540 828080 865720 869484 909006 938630 952292 979440 997460 1023960 1038864 1047333 1072720 1086855 1097206 1126356 1147079 1159312 1190365 1196952 1212008 1242120 1298580 1396444 1407945 1428438 1449140 1496190 1501808 1515010 1580880 1609080 1645809 1666511 1731440 1738968 1745555 1818012 1877260 1904584 1994920 2047920 2094666 2173710 2194412 2252712 2272515 2294158 2380730 2393904 2424016 2484240 2597160 2743015 2792888 2815890 2856876 2898280 2992380 3030020 3218160 3291618 3333022 3441237 3477936 3491110 3571095 3636024 3754520 3809168 3840221 3989840 4189332 4347420 4388824 4505424 4545030 4588316 4761460 4999533 5194320 5236665 5486030 5585776 5631780 5713752 5735395 5796560 5984760 6060040 6583236 6666044 6882474 6982220 7142190 7272048 7509040 7680442 8029553 8229045 8332555 8378664 8694840 8777648 9090060 9176632 9522920 9999066 10473330 10972060 11263560 11427504 11470790 11520663 11969520 12120080 12617869 13166472 13332088 13764948 13964440 14284380 15360884 16059106 16458090 16665110 16757328 17206185 17389680 18180120 18353264 19045840 19201105 19998132 20946660 21944120 22527120 22941580 23041326 24088659 24997665 25235738 26332944 26664176 27529896 27928880 28568760 30721768 32118212 32916180 33330220 34412370 36360240 37853607 38402210 39996264 40147765 41893320 43888240 45883160 46082652 48177318 49995330 50471476 55059792 57137520 57603315 61443536 63089345 64236424 65832360 66660440 68824740 75707214 76804420 79992528 80295530 83786640 88325083 91766320 92165304 96354636 99990660 100942952 115206630 120443295 126178690 128472848 131664720 133320880 137649480 151414428 153608840 160591060 176650166 184330608 189268035 192709272 199981320 201885904 230413260 240886590 252357380 264975249 275298960 302828856 307217680 321182120 353300332 378536070 385418544 399962640 441625415 460826520 481773180 504714760 529950498 605657712 642364240 706600664 757072140 883250830 921653040 963546360 1009429520 1059900996 1324876245 1413201328 1514144280 1766501660 1927092720 2119801992 2649752490 3028288560 3533003320 4239603984 5299504980 7066006640 10599009960 21198019920
• Sum of all divisors σ(n): 87196704768
• Sum of proper divisors (its aliquot sum) s(n): 65998684848
• 21198019920 is an abundant number, because the sum of its proper divisors (65998684848) is greater than itself. Its abundance is 44800664928

Bases of 21198019920

• Binary: 10011101111100000000001110101010000₂
• Hexadecimal: 0x4EF801D50
• Base-36: 9QKR4UO

Squares and roots of 21198019920

• 21198019920 squared (21198019920²) is 449356048528716806400
• 21198019920 cubed (21198019920³) is 9525458467884225554105983488000
• The square root of 21198019920 is 145595.3980041951
• The cube root of 21198019920 is 2767.5688382803

Scales and comparisons

• 21,198,019,920 seconds is equal to 674 years, 1 week, 4 days, 10 hours, 52 minutes.
• To count from 1 to 21,198,019,920 would take you about one thousand, three hundred forty-eight 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 21198019920 cubic inches would be around 230.6 feet tall.

Recreational maths with 21198019920

• 21198019920 backwards is 02991089112
• 21198019920 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21198019920's digits is 42
• More coming soon!