21240143808

Names of 21240143808

• Cardinal: 21240143808 can be written as Twenty-one billion, two hundred forty million, one hundred forty-three thousand, eight hundred eight.

Scientific notation

• Scientific notation: 2.1240143808 × 10¹⁰

Factors of 21240143808

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 526

Divisors of 21240143808

• Number of divisors d(n): 448
• Complete list of divisors:
  1 2 3 4 6 8 12 13 16 17 24 26 29 32 34 39 41 48 51 52 58 64 68 78 82 87 96 102 104 116 123 136 156 164 174 192 204 208 221 232 246 272 312 328 348 377 408 416 421 442 464 492 493 533 544 624 656 663 696 697 754 816 832 842 884 928 984 986 1066 1088 1131 1189 1248 1263 1312 1326 1392 1394 1479 1508 1599 1632 1684 1768 1856 1968 1972 2091 2132 2262 2378 2496 2526 2624 2652 2784 2788 2958 3016 3198 3264 3368 3536 3567 3936 3944 4182 4264 4524 4756 5052 5304 5473 5568 5576 5916 6032 6396 6409 6736 7072 7134 7157 7872 7888 8364 8528 9048 9061 9512 10104 10608 10946 11152 11832 12064 12209 12792 12818 13472 14144 14268 14314 15457 15776 16419 16728 17056 17261 18096 18122 19024 19227 20208 20213 21216 21471 21892 22304 23664 24128 24418 25584 25636 26944 27183 28536 28628 30914 31552 32838 33456 34112 34522 36192 36244 36627 38048 38454 40416 40426 42432 42942 43784 44608 46371 47328 48836 51168 51272 51783 54366 57072 57256 60639 61828 65676 66912 69044 72384 72488 73254 76096 76908 80832 80852 85884 87568 92742 93041 94656 97672 102336 102544 103566 108732 114144 114512 121278 123656 131352 133824 138088 144976 146508 153816 158717 161704 171768 175136 185484 186082 195344 205088 207132 207553 217464 224393 228288 229024 242556 247312 262704 262769 276176 279123 289952 293016 293437 307632 317434 323408 343536 350272 370968 372164 390688 410176 414264 415106 434928 448786 458048 476151 485112 494624 500569 525408 525538 552352 558246 579904 586032 586874 615264 622659 634868 646816 673179 687072 741936 744328 781376 788307 828528 830212 869856 880311 897572 952302 970224 989248 1001138 1050816 1051076 1104704 1116492 1172064 1173748 1230528 1245318 1269736 1293632 1346358 1374144 1483872 1488656 1501707 1576614 1657056 1660424 1739712 1760622 1795144 1904604 1940448 2002276 2102152 2232984 2344128 2347496 2490636 2539472 2692716 2698189 2967744 2977312 3003414 3153228 3314112 3320848 3521244 3590288 3809208 3814681 3880896 4004552 4204304 4465968 4694992 4981272 5078944 5385432 5396378 5954624 6006828 6306456 6507397 6641696 7042488 7180576 7618416 7629362 8009104 8094567 8408608 8509673 8931936 9389984 9962544 10157888 10770864 10792756 11444043 12013656 12612912 13014794 13283392 14084976 14361152 15236832 15258724 16018208 16189134 16817216 17019346 17863872 18779968 19522191 19925088 21541728 21585512 22888086 24027312 25225824 25529019 26029588 28169952 30473664 30517448 32036416 32378268 34038692 39044382 39850176 43083456 43171024 45776172 48054624 50451648 51058038 52059176 56339904 61034896 64756536 68077384 78088764 86342048 91552344 96109248 102116076 104118352 110625749 122069792 129513072 136154768 156177528 172684096 183104688 204232152 208236704 221251498 244139584 259026144 272309536 312355056 331877247 366209376 408464304 416473408 442502996 518052288 544619072 624710112 663754494 732418752 816928608 885005992 1249420224 1327508988 1633857216 1770011984 2655017976 3540023968 5310035952 7080047936 10620071904 21240143808
• Sum of all divisors σ(n): 68068667520
• Sum of proper divisors (its aliquot sum) s(n): 46828523712
• 21240143808 is an abundant number, because the sum of its proper divisors (46828523712) is greater than itself. Its abundance is 25588379904

Bases of 21240143808

• Binary: 10011110010000000101101111111000000₂
• Hexadecimal: 0x4F202DFC0
• Base-36: 9R9TZUO

Squares and roots of 21240143808

• 21240143808 squared (21240143808²) is 451143708984520740864
• 21240143808 cubed (21240143808³) is 9582357256905722181910062170112
• The square root of 21240143808 is 145739.9869905305
• The cube root of 21240143808 is 2769.4008273647

Scales and comparisons

• 21,240,143,808 seconds is equal to 675 years, 19 weeks, 1 day, 23 hours, 56 minutes, 48 seconds.
• To count from 1 to 21,240,143,808 would take you about one thousand, three hundred fifty 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 21240143808 cubic inches would be around 230.8 feet tall.

Recreational maths with 21240143808

• 21240143808 backwards is 80834104212
• The number of decimal digits it has is: 11
• The sum of 21240143808's digits is 33
• More coming soon!