21405841920

Names of 21405841920

• Cardinal: 21405841920 can be written as Twenty-one billion, four hundred five million, eight hundred forty-one thousand, nine hundred twenty.

Scientific notation

• Scientific notation: 2.140584192 × 10¹⁰

Factors of 21405841920

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 16
• Sum of prime factors: 279

Divisors of 21405841920

• Number of divisors d(n): 640
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 27 29 30 32 36 40 45 48 54 58 59 60 64 72 80 87 90 96 108 116 118 120 128 135 144 145 160 174 177 180 181 192 216 232 236 240 256 261 270 288 290 295 320 348 354 360 362 384 432 435 464 472 480 512 522 531 540 543 576 580 590 640 696 708 720 724 768 783 864 870 885 905 928 944 960 1044 1062 1080 1086 1152 1160 1180 1280 1305 1392 1416 1440 1448 1536 1566 1593 1629 1711 1728 1740 1770 1810 1856 1888 1920 2088 2124 2160 2172 2304 2320 2360 2560 2610 2655 2715 2784 2832 2880 2896 3132 3186 3258 3422 3456 3480 3540 3620 3712 3776 3840 3915 4176 4248 4320 4344 4608 4640 4720 4887 5133 5220 5249 5310 5430 5568 5664 5760 5792 6264 6372 6516 6844 6912 6960 7080 7240 7424 7552 7680 7830 7965 8145 8352 8496 8555 8640 8688 9280 9440 9774 10266 10440 10498 10620 10679 10860 11136 11328 11520 11584 12528 12744 13032 13688 13824 13920 14160 14480 14848 15104 15399 15660 15747 15930 16290 16704 16992 17110 17280 17376 18560 18880 19548 20532 20880 20996 21240 21358 21720 22272 22656 23040 23168 24435 25056 25488 25665 26064 26245 27376 27840 28320 28960 30208 30798 31320 31494 31860 32037 32580 33408 33984 34220 34560 34752 37120 37760 39096 41064 41760 41992 42480 42716 43440 44544 45312 46197 46336 47241 48870 50112 50976 51330 52128 52490 53395 54752 55680 56640 57920 61596 62640 62988 63720 64074 65160 66816 67968 68440 69120 69504 74240 75520 76995 78192 78735 82128 83520 83984 84960 85432 86880 90624 92394 92672 94482 96111 97740 100224 101952 102660 104256 104980 106790 109504 111360 113280 115840 123192 125280 125976 127440 128148 130320 133632 135936 136880 139008 141723 151040 153990 156384 157470 160185 164256 167040 167968 169920 170864 173760 184788 188964 192222 195480 200448 203904 205320 208512 209960 213580 219008 222720 226560 230985 231680 236205 246384 250560 251952 254880 256296 260640 271872 273760 278016 283446 288333 307980 309691 312768 314940 320370 328512 334080 335936 339840 341728 347520 369576 377928 384444 390960 400896 407808 410640 417024 419920 427160 438016 453120 461970 463360 472410 480555 492768 501120 503904 509760 512592 521280 547520 566892 576666 615960 619382 625536 629880 640740 657024 668160 671872 679680 683456 695040 708615 739152 755856 768888 781920 815616 821280 834048 839840 854320 876032 923940 929073 944820 961110 985536 1002240 1007808 1019520 1025184 1042560 1095040 1133784 1153332 1231920 1238764 1251072 1259760 1281480 1314048 1343744 1359360 1366912 1390080 1417230 1441665 1478304 1511712 1537776 1548455 1563840 1642560 1679680 1708640 1847880 1858146 1889640 1922220 1971072 2004480 2015616 2039040 2050368 2085120 2190080 2267568 2306664 2463840 2477528 2502144 2519520 2562960 2628096 2687488 2733824 2787219 2834460 2883330 2956608 3023424 3075552 3096910 3127680 3285120 3359360 3417280 3695760 3716292 3779280 3844440 3942144 4031232 4078080 4100736 4170240 4380160 4535136 4613328 4645365 4927680 4955056 5039040 5125920 5467648 5574438 5668920 5766660 5913216 6046848 6151104 6193820 6255360 6570240 6718720 6834560 7391520 7432584 7558560 7688880 7884288 8062464 8201472 8361657 9070272 9226656 9290730 9855360 9910112 10078080 10251840 11148876 11337840 11533320 11826432 12093696 12302208 12387640 12510720 13140480 13437440 13669120 13936095 14783040 14865168 15117120 15377760 16402944 16723314 18140544 18453312 18581460 19710720 19820224 20156160 20503680 22297752 22675680 23066640 23652864 24187392 24604416 24775280 27338240 27872190 29566080 29730336 30234240 30755520 33446628 36281088 36906624 37162920 39421440 39640448 40312320 41007360 41808285 44595504 45351360 46133280 49208832 49550560 55744380 59132160 59460672 60468480 61511040 66893256 72562176 73813248 74325840 79280896 82014720 83616570 89191008 90702720 92266560 99101120 111488760 118264320 118921344 120936960 123022080 133786512 147626496 148651680 158561792 167233140 178382016 181405440 184533120 198202240 222977520 237842688 246044160 267573024 297303360 334466280 356764032 362810880 369066240 396404480 445955040 475685376 535146048 594606720 668932560 713528064 738132480 792808960 891910080 1070292096 1189213440 1337865120 1427056128 1783820160 2140584192 2378426880 2675730240 3567640320 4281168384 5351460480 7135280640 10702920960 21405841920
• Sum of all divisors σ(n): 80432352000
• Sum of proper divisors (its aliquot sum) s(n): 59026510080
• 21405841920 is an abundant number, because the sum of its proper divisors (59026510080) is greater than itself. Its abundance is 37620668160

Bases of 21405841920

• Binary: 10011111011111000110011101000000000₂
• Hexadecimal: 0x4FBE33A00
• Base-36: 9U0HHC0

Squares and roots of 21405841920

• 21405841920 squared (21405841920²) is 458210068304029286400
• 21405841920 cubed (21405841920³) is 9808372288268453403728805888000
• The square root of 21405841920 is 146307.3542922569
• The cube root of 21405841920 is 2776.5837095819

Scales and comparisons

• 21,405,841,920 seconds is equal to 680 years, 33 weeks, 1 day, 19 hours, 12 minutes.
• To count from 1 to 21,405,841,920 would take you about one thousand, three hundred sixty-one 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 21405841920 cubic inches would be around 231.4 feet tall.

Recreational maths with 21405841920

• 21405841920 backwards is 02914850412
• 21405841920 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21405841920's digits is 36
• More coming soon!