21321785520

Names of 21321785520

• Cardinal: 21321785520 can be written as Twenty-one billion, three hundred twenty-one million, seven hundred eighty-five thousand, five hundred twenty.

Scientific notation

• Scientific notation: 2.132178552 × 10¹⁰

Factors of 21321785520

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 14
• Sum of prime factors: 251

Divisors of 21321785520

• Number of divisors d(n): 800
• 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 35 36 40 42 45 48 49 53 54 56 60 63 70 72 80 81 84 90 98 105 106 108 112 120 126 135 140 144 147 159 162 168 180 181 189 196 210 212 216 240 245 252 265 270 280 294 315 318 324 336 343 360 362 371 378 392 405 420 424 432 441 477 490 504 530 540 543 560 567 588 630 636 648 686 720 724 735 742 756 784 795 810 840 848 882 905 945 954 980 1008 1029 1060 1080 1086 1113 1134 1176 1260 1267 1272 1296 1323 1372 1431 1448 1470 1484 1512 1590 1620 1629 1680 1715 1764 1810 1855 1890 1908 1960 2058 2120 2160 2172 2205 2226 2268 2352 2385 2520 2534 2544 2597 2646 2715 2744 2835 2862 2896 2940 2968 3024 3087 3180 3240 3258 3339 3430 3528 3620 3710 3780 3801 3816 3920 3969 4116 4240 4293 4344 4410 4452 4536 4770 4887 5040 5068 5145 5194 5292 5430 5488 5565 5670 5724 5880 5936 6174 6335 6360 6480 6516 6615 6678 6860 7056 7155 7240 7420 7560 7602 7632 7791 7938 8145 8232 8586 8688 8820 8869 8904 9072 9261 9540 9593 9774 10017 10136 10290 10388 10584 10860 11130 11340 11403 11448 11760 12348 12670 12720 12985 13032 13230 13356 13720 14310 14480 14661 14840 15120 15204 15435 15582 15876 16290 16464 16695 17172 17640 17738 17808 18179 18522 19005 19080 19186 19548 19845 20034 20272 20580 20776 21168 21465 21720 22260 22680 22806 22896 23373 24435 24696 25340 25970 26064 26460 26607 26712 27440 27783 28620 28779 29322 29680 30051 30408 30870 31164 31752 32580 33390 34209 34344 35280 35476 36358 37044 38010 38160 38372 38955 39096 39690 40068 41160 41552 42930 43440 44345 44520 45360 45612 46305 46746 47965 48870 49392 50085 50680 51940 52920 53214 53424 54537 55566 57015 57240 57558 58644 60102 60816 61740 62083 62328 63504 65160 66780 67151 68418 68688 70119 70952 72716 73305 74088 76020 76744 77910 78192 79380 79821 80136 82320 85860 86337 88690 89040 90895 91224 92610 93492 95930 97740 100170 101360 102627 103880 105840 106428 109074 111132 114030 114480 115116 116865 117288 120204 123480 124166 124656 130320 133035 133560 134302 136836 138915 140238 141904 143895 145432 146610 148176 150255 152040 153488 155820 158760 159642 160272 163611 171045 171720 172674 177380 181790 182448 185220 186249 186984 191860 195480 200340 201453 205254 207760 210357 212856 218148 222264 228060 230232 233730 234576 239463 240408 246960 248332 259011 266070 267120 268604 272685 273672 277830 280476 287790 290864 293220 300510 304080 310415 311640 317520 319284 327222 335755 342090 343440 345348 350595 354760 363580 370440 372498 373968 383720 390960 399105 400680 402906 410508 420714 425712 431685 436296 444528 456120 460464 467460 470057 478926 480816 490833 496664 513135 518022 532140 537208 545370 547344 555660 558747 560952 575580 586440 601020 604359 620830 623280 638568 654444 671510 684180 690696 701190 709520 718389 727160 740880 744996 767440 777033 798210 801360 805812 818055 821016 841428 863370 872592 912240 931245 934920 940114 957852 981666 993328 1007265 1026270 1036044 1051785 1064280 1074416 1090740 1111320 1117494 1121904 1151160 1172880 1197315 1202040 1208718 1241660 1277136 1295055 1308888 1343020 1368360 1381392 1402380 1410171 1436778 1454320 1472499 1489992 1554066 1596420 1611624 1636110 1642032 1676241 1682856 1726740 1813077 1862490 1869840 1880228 1915704 1963332 2014530 2052540 2072088 2103570 2128560 2181480 2222640 2234988 2302320 2350285 2394630 2404080 2417436 2454165 2483320 2590110 2617776 2686040 2736720 2793735 2804760 2820342 2873556 2944998 2979984 3021795 3108132 3192840 3223248 3272220 3290399 3352482 3365712 3453480 3591945 3626154 3724980 3760456 3831408 3885165 3926664 4029060 4105080 4144176 4207140 4230513 4362960 4469976 4700570 4789260 4834872 4908330 4966640 5028723 5180220 5372080 5439231 5587470 5609520 5640684 5747112 5889996 6043590 6216264 6385680 6544440 6580798 6704964 6906960 7050855 7183890 7252308 7362495 7449960 7520912 7770330 7853328 8058120 8210160 8381205 8414280 8461026 8939952 9065385 9401140 9578520 9669744 9816660 9871197 10057446 10360440 10878462 11174940 11281368 11494224 11779992 12087180 12432528 12691539 13088880 13161596 13409928 14101710 14367780 14504616 14724990 14899920 15540660 16116240 16451995 16762410 16828560 16922052 18130770 18802280 19157040 19633320 19742394 20114892 20720880 21152565 21756924 22349880 22562736 23559984 24174360 25143615 25383078 26323192 26819856 27196155 28203420 28735560 29009232 29449980 29613591 31081320 32903990 33524820 33844104 36261540 37604560 38074617 39266640 39484788 40229784 42305130 43513848 44699760 48348720 49355985 50287230 50766156 52646384 54392310 56406840 57471120 58899960 59227182 62162640 63457695 65807980 67049640 67688208 72523080 76149234 78969576 80459568 84610260 87027696 88840773 98711970 100574460 101532312 108784620 112813680 117799920 118454364 126915390 131615960 134099280 145046160 148067955 152298468 157939152 169220520 177681546 190373085 197423940 201148920 203064624 217569240 236908728 253830780 263231920 266522319 296135910 304596936 338441040 355363092 380746170 394847880 402297840 435138480 444203865 473817456 507661560 533044638 592271820 609193872 710726184 761492340 789695760 888407730 1015323120 1066089276 1184543640 1332611595 1421452368 1522984680 1776815460 2132178552 2369087280 2665223190 3045969360 3553630920 4264357104 5330446380 7107261840 10660892760 21321785520
• Sum of all divisors σ(n): 88475587200
• Sum of proper divisors (its aliquot sum) s(n): 67153801680
• 21321785520 is an abundant number, because the sum of its proper divisors (67153801680) is greater than itself. Its abundance is 45832016160

Bases of 21321785520

• Binary: 10011110110111000001010000010110000₂
• Hexadecimal: 0x4F6E0A0B0
• Base-36: 9SMFV00

Squares and roots of 21321785520

• 21321785520 squared (21321785520²) is 454618537760881670400
• 21321785520 cubed (21321785520³) is 9693278955553540022368132608000
• The square root of 21321785520 is 146019.8120804159
• The cube root of 21321785520 is 2772.9445816707

Scales and comparisons

• 21,321,785,520 seconds is equal to 677 years, 50 weeks, 1 day, 22 hours, 12 minutes.
• To count from 1 to 21,321,785,520 would take you about one thousand, three hundred fifty-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 21321785520 cubic inches would be around 231.1 feet tall.

Recreational maths with 21321785520

• 21321785520 backwards is 02558712312
• 21321785520 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21321785520's digits is 36
• More coming soon!