21438346798440

Names of 21438346798440

• Cardinal: 21438346798440 can be written as Twenty-one trillion, four hundred thirty-eight billion, three hundred forty-six million, seven hundred ninety-eight thousand, four hundred forty.

Scientific notation

• Scientific notation: 2.143834679844 × 10¹³

Factors of 21438346798440

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 4293330

Divisors of 21438346798440

• Number of divisors d(n): 384
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 11 12 13 15 18 20 22 24 26 30 33 36 39 40 44 45 52 55 60 65 66 72 78 88 90 97 99 104 110 117 120 130 132 143 156 165 180 194 195 198 220 234 260 264 286 291 312 330 360 388 390 396 429 440 468 485 495 520 572 582 585 660 715 776 780 792 858 873 936 970 990 1067 1144 1164 1170 1261 1287 1320 1430 1455 1560 1716 1746 1940 1980 2134 2145 2328 2340 2522 2574 2860 2910 3201 3432 3492 3783 3880 3960 4268 4290 4365 4680 5044 5148 5335 5720 5820 6305 6402 6435 6984 7566 8536 8580 8730 9603 10088 10296 10670 11349 11640 12610 12804 12870 13871 15132 16005 17160 17460 18915 19206 21340 22698 25220 25608 25740 27742 30264 32010 34920 37830 38412 41613 42680 45396 48015 50440 51480 55484 56745 64020 69355 75660 76824 83226 90792 96030 110968 113490 124839 128040 138710 151320 166452 192060 208065 226980 249678 277420 332904 384120 416130 453960 499356 554840 624195 832260 998712 1248390 1664520 2496780 4293199 4993560 8586398 12879597 17172796 21465995 25759194 34345592 38638791 42931990 47225189 51518388 55811587 64397985 77277582 85863980 94450378 103036776 111623174 128795970 141675567 154555164 167434761 171727960 188900756 193193955 223246348 236125945 257591940 279057935 283351134 309110328 334869522 377801512 386387910 416440303 425026701 446492696 472251890 502304283 515183880 558115870 566702268 613927457 669739044 708377835 772775820 832880606 837173805 850053402 944503780 1004608566 1116231740 1133404536 1227854914 1249320909 1339478088 1416755670 1545551640 1665761212 1674347610 1700106804 1841782371 1889007560 2009217132 2082201515 2125133505 2232463480 2455709828 2498641818 2511521415 2833511340 3069637285 3331522424 3348695220 3400213608 3683564742 3747962727 4018434264 4164403030 4250267010 4580843333 4911419656 4997283636 5023042830 5413723939 5525347113 5667022680 6139274570 6246604545 6697390440 7367129484 7495925454 8328806060 8500534020 9161686666 9208911855 9994567272 10046085660 10827447878 11050694226 12278549140 12493209090 13742529999 14734258968 14991850908 16241171817 16657612120 17001068040 18323373332 18417823710 18739813635 20092171320 21654895756 22101388452 22904216665 24557098280 24986418180 27068619695 27485059998 27626735565 29983701816 32482343634 36646746664 36835647420 37479627270 41227589997 43309791512 44202776904 45808433330 48723515451 49972836360 54137239390 54970119996 55253471130 59550963329 64964687268 68712649995 73671294840 74959254540 81205859085 82455179994 91616866660 97447030902 108274478780 109940239992 110506942260 119101926658 129929374536 137425299990 149918509080 162411718170 164910359988 178652889987 183233733320 194894061804 206137949985 216548957560 221013884520 238203853316 243617577255 274850599980 297754816645 324823436340 329820719976 357305779974 389788123608 412275899970 476407706632 487235154510 535958669961 549701199960 595509633290 649646872680 714611559948 824551799940 893264449935 974470309020 1071917339922 1191019266580 1429223119896 1649103599880 1786528899870 1948940618040 2143834679844 2382038533160 2679793349805 3573057799740 4287669359688 5359586699610 7146115599480 10719173399220 21438346798440
• Sum of all divisors σ(n): 82699396416000
• Sum of proper divisors (its aliquot sum) s(n): 61261049617560
• 21438346798440 is an abundant number, because the sum of its proper divisors (61261049617560) is greater than itself. Its abundance is 39822702819120

Bases of 21438346798440

• Binary: 100110111111110000001000010111010010101101000₂
• Hexadecimal: 0x137F810BA568
• Base-36: 7LKN25U20

Squares and roots of 21438346798440

• 21438346798440 squared (21438346798440²) is 459602713450182597986433600
• 21438346798440 cubed (21438346798440³) is 9853122360449058825975860359113643584000
• The square root of 21438346798440 is 4630156.2390960415
• The cube root of 21438346798440 is 27779.8841757117

Scales and comparisons

• 21,438,346,798,440 seconds is equal to 681,673 years, 5 weeks, 6 days, 20 hours, 54 minutes.
• To count from 1 to 21,438,346,798,440 would take you about one million, seven hundred four thousand, one hundred eighty-two 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 21438346798440 cubic inches would be around 2315 feet tall.

Recreational maths with 21438346798440

• 21438346798440 backwards is 04489764383412
• The number of decimal digits it has is: 14
• The sum of 21438346798440's digits is 63
• More coming soon!