21475782720

Names of 21475782720

• Cardinal: 21475782720 can be written as Twenty-one billion, four hundred seventy-five million, seven hundred eighty-two thousand, seven hundred twenty.

Scientific notation

• Scientific notation: 2.147578272 × 10¹⁰

Factors of 21475782720

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 15
• Sum of prime factors: 511

Divisors of 21475782720

• Number of divisors d(n): 840
• Complete list of divisors:
  1 2 3 4 5 6 7 8 9 10 12 14 15 16 18 20 21 24 27 28 30 32 35 36 37 40 42 45 48 49 54 56 60 63 64 70 72 74 80 81 84 90 96 98 105 108 111 112 120 126 135 140 144 147 148 160 162 168 180 185 189 192 196 210 216 222 224 240 245 252 259 270 280 288 294 296 315 320 324 333 336 360 370 378 392 405 420 432 441 444 448 457 480 490 504 518 540 555 560 567 576 588 592 630 648 666 672 720 735 740 756 777 784 810 840 864 882 888 914 945 960 980 999 1008 1036 1080 1110 1120 1134 1176 1184 1260 1295 1296 1323 1332 1344 1371 1440 1470 1480 1512 1554 1568 1620 1665 1680 1728 1764 1776 1813 1828 1890 1960 1998 2016 2072 2160 2205 2220 2240 2268 2285 2331 2352 2368 2520 2590 2592 2646 2664 2742 2835 2880 2940 2960 2997 3024 3108 3136 3199 3240 3330 3360 3528 3552 3626 3656 3780 3885 3920 3969 3996 4032 4113 4144 4320 4410 4440 4536 4570 4662 4704 4995 5040 5180 5184 5292 5328 5439 5484 5670 5880 5920 5994 6048 6216 6398 6480 6615 6660 6720 6855 6993 7056 7104 7252 7312 7560 7770 7840 7938 7992 8226 8288 8640 8820 8880 9065 9072 9140 9324 9408 9597 9990 10080 10360 10584 10656 10878 10968 11340 11655 11760 11840 11988 12096 12339 12432 12796 12960 13230 13320 13710 13986 14112 14504 14624 14985 15120 15540 15680 15876 15984 15995 16317 16452 16576 16909 17640 17760 18130 18144 18280 18648 19194 19845 19980 20160 20565 20720 20979 21168 21312 21756 21936 22393 22680 23310 23520 23976 24678 24864 25592 25920 26460 26640 27195 27420 27972 28224 28791 29008 29248 29970 30240 31080 31752 31968 31990 32634 32904 33818 34965 35280 35520 36260 36288 36560 37017 37296 38388 39690 39960 41130 41440 41958 42336 43512 43872 44786 45360 46620 47040 47952 47985 48951 49356 49728 50727 51184 52920 53280 54390 54840 55944 57582 58016 59940 60480 61695 62160 63504 63936 63980 65268 65808 67179 67636 69930 70560 72520 73120 74034 74592 76776 79380 79920 81585 82260 82880 83916 84545 84672 86373 87024 87744 89572 90720 93240 95904 95970 97902 98712 101454 102368 104895 105840 106560 108780 109680 111888 111965 115164 116032 118363 119880 123390 124320 127008 127960 130536 131616 134358 135272 139860 141120 143955 145040 146240 146853 148068 149184 152181 153552 158760 159840 163170 164520 167832 169090 172746 174048 179144 181440 185085 186480 191808 191940 195804 197424 201537 202908 204736 209790 211680 217560 219360 223776 223930 230328 236726 239760 244755 246780 248640 253635 254016 255920 259119 261072 263232 268716 270544 279720 287910 290080 293706 296136 304362 307104 317520 319680 326340 329040 335664 335895 338180 345492 348096 355089 358288 370170 372960 383880 391608 394848 403074 405816 419580 423360 431865 435120 438720 447552 447860 456543 460656 473452 479520 489510 493560 507270 511840 518238 522144 537432 541088 559440 575820 580160 587412 591815 592272 604611 608724 614208 635040 652680 658080 671328 671790 676360 690984 710178 716576 734265 740340 745920 760905 767760 783216 789696 806148 811632 828541 839160 863730 870240 895720 913086 921312 946904 959040 979020 987120 1007685 1014540 1023680 1036476 1044288 1065267 1074864 1082176 1118880 1151640 1174824 1183630 1184544 1209222 1217448 1270080 1295595 1305360 1316160 1342656 1343580 1352720 1369629 1381968 1420356 1433152 1468530 1480680 1521810 1535520 1566432 1612296 1623264 1657082 1678320 1727460 1740480 1775445 1791440 1813833 1826172 1842624 1893808 1958040 1974240 2015370 2029080 2072952 2130534 2149728 2237760 2282715 2303280 2349648 2367260 2369088 2418444 2434896 2485623 2591190 2610720 2687160 2705440 2739258 2763936 2840712 2937060 2961360 3023055 3043620 3071040 3132864 3195801 3224592 3246528 3314164 3356640 3454920 3550890 3582880 3627666 3652344 3787616 3916080 3948480 4030740 4058160 4142705 4145904 4261068 4299456 4565430 4606560 4699296 4734520 4836888 4869792 4971246 5182380 5221440 5326335 5374320 5410880 5478516 5527872 5681424 5874120 5922720 6046110 6087240 6391602 6449184 6628328 6713280 6848145 6909840 7101780 7165760 7255332 7304688 7456869 7575232 7832160 8061480 8116320 8285410 8291808 8522136 9069165 9130860 9213120 9398592 9469040 9587403 9673776 9739584 9942492 10364760 10652670 10748640 10957032 11362848 11748240 11845440 12092220 12174480 12428115 12783204 12898368 13256656 13696290 13819680 14203560 14510664 14609376 14913738 15664320 15979005 16122960 16232640 16570820 16583616 17044272 18138330 18261720 18938080 19174806 19347552 19884984 20729520 21305340 21497280 21914064 22370607 22725696 23496480 24184440 24348960 24856230 25566408 26513312 27392580 27639360 28407120 29021328 29218752 29827476 31958010 32245920 33141640 34088544 36276660 36523440 37284345 37876160 38349612 38695104 39769968 41459040 42610680 43828128 44741214 46992960 47937015 48368880 48697920 49712460 51132816 53026624 54785160 56814240 58042656 59654952 63916020 64491840 66283280 67111821 68177088 72553320 73046880 74568690 76699224 79539936 82918080 85221360 87656256 89482428 95874030 96737760 99424920 102265632 109570320 111853035 113628480 116085312 119309904 127832040 132566560 134223642 145106640 146093760 149137380 153398448 159079872 170442720 178964856 191748060 193475520 198849840 204531264 219140640 223706070 238619808 255664080 265133120 268447284 290213280 298274760 306796896 335559105 340885440 357929712 383496120 397699680 438281280 447412140 477239616 511328160 536894568 580426560 596549520 613593792 671118210 715859424 766992240 795399360 894824280 1022656320 1073789136 1193099040 1342236420 1431718848 1533984480 1789648560 2147578272 2386198080 2684472840 3067968960 3579297120 4295156544 5368945680 7158594240 10737891360 21475782720
• Sum of all divisors σ(n): 91466965656
• Sum of proper divisors (its aliquot sum) s(n): 69991182936
• 21475782720 is an abundant number, because the sum of its proper divisors (69991182936) is greater than itself. Its abundance is 48515400216

Bases of 21475782720

• Binary: 10100000000000011100111000001000000₂
• Hexadecimal: 0x5000E7040
• Base-36: 9V64K00

Squares and roots of 21475782720

• 21475782720 squared (21475782720²) is 461209243436650598400
• 21475782720 cubed (21475782720³) is 9904829500501094335796379648000
• The square root of 21475782720 is 146546.1794793709
• The cube root of 21475782720 is 2779.6044638509

Scales and comparisons

• 21,475,782,720 seconds is equal to 682 years, 44 weeks, 6 days, 7 hours, 12 minutes.
• To count from 1 to 21,475,782,720 would take you about one thousand, three hundred sixty-five 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 21475782720 cubic inches would be around 231.6 feet tall.

Recreational maths with 21475782720

• 21475782720 backwards is 02728757412
• 21475782720 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21475782720's digits is 45
• More coming soon!