81684238720
81,684,238,720 is an even composite number composed of six prime numbers multiplied together.
81684238720 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of three hundred eighty-four divisors.
Prime factorization of 81684238720:
27 × 5 × 72 × 23 × 269 × 421
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 5 × 7 × 7 × 23 × 269 × 421)See below for interesting mathematical facts about the number 81684238720 from the Numbermatics database.
Names of 81684238720
- Cardinal: 81684238720 can be written as Eighty-one billion, six hundred eighty-four million, two hundred thirty-eight thousand, seven hundred twenty.
Scientific notation
- Scientific notation: 8.168423872 × 1010
Factors of 81684238720
Divisors of 81684238720
- Number of divisors d(n): 384
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Complete list of divisors:
1 2 4 5 7 8 10 14 16 20 23 28 32 35 40 46 49 56 64 70 80 92 98 112 115 128 140 160 161 184 196 224 230 245 269 280 320 322 368 392 421 448 460 490 538 560 640 644 736 784 805 842 896 920 980 1076 1120 1127 1288 1345 1472 1568 1610 1684 1840 1883 1960 2105 2152 2240 2254 2576 2690 2944 2947 3136 3220 3368 3680 3766 3920 4210 4304 4480 4508 5152 5380 5635 5894 6187 6272 6440 6736 7360 7532 7840 8420 8608 9016 9415 9683 10304 10760 11270 11788 12374 12880 13181 13472 14720 14735 15064 15680 16840 17216 18032 18830 19366 20608 20629 21520 22540 23576 24748 25760 26362 26944 29470 30128 30935 31360 33680 34432 36064 37660 38732 41258 43040 43309 45080 47152 48415 49496 51520 52724 53888 58940 60256 61870 65905 67360 67781 72128 75320 77464 82516 86080 86618 90160 94304 96830 98992 103040 103145 105448 113249 117880 120512 123740 131810 134720 135562 144256 150640 154928 165032 172160 173236 180320 188608 193660 197984 206290 210896 216545 226498 235760 241024 247480 263620 269440 271124 301280 303163 309856 330064 338905 346472 360640 377216 387320 395968 412580 421792 433090 452996 471520 474467 494960 527240 542248 566245 602560 606326 619712 660128 677810 692944 721280 774640 791936 792743 825160 843584 866180 905992 943040 948934 989920 1054480 1084496 1132490 1205120 1212652 1239424 1320256 1355620 1385888 1515815 1549280 1585486 1650320 1687168 1732360 1811984 1886080 1897868 1979840 2108960 2168992 2264980 2372335 2425304 2604727 2640512 2711240 2771776 3031630 3098560 3170972 3300640 3464720 3623968 3795736 3959680 3963715 4217920 4337984 4529960 4744670 4850608 5209454 5422480 5543552 5549201 6063260 6197120 6341944 6601280 6929440 7247936 7591472 7927430 8435840 8675968 9059920 9489340 9701216 10418908 10844960 11098402 12126520 12683888 13023635 13202560 13858880 14495872 15182944 15854860 18119840 18233089 18978680 19402432 20837816 21689920 22196804 24253040 25367776 26047270 27717760 27746005 30365888 31709720 36239680 36466178 37957360 38804864 41675632 43379840 44393608 48506080 50735552 52094540 55492010 60731776 63419440 72479360 72932356 75914720 83351264 88787216 91165445 97012160 101471104 104189080 110984020 126838880 127631623 145864712 151829440 166702528 177574432 182330890 194024320 208378160 221968040 253677760 255263246 291729424 303658880 333405056 355148864 364661780 416756320 443936080 507355520 510526492 583458848 638158115 710297728 729323560 833512640 887872160 1021052984 1166917696 1276316230 1458647120 1667025280 1775744320 2042105968 2333835392 2552632460 2917294240 3551488640 4084211936 5105264920 5834588480 8168423872 10210529840 11669176960 16336847744 20421059680 40842119360 81684238720
- Sum of all divisors σ(n): 238480977600
- Sum of proper divisors (its aliquot sum) s(n): 156796738880
- 81684238720 is an abundant number, because the sum of its proper divisors (156796738880) is greater than itself. Its abundance is 75112500160
Bases of 81684238720
- Binary: 10011000001001100001010010001100000002
- Hexadecimal: 0x1304C29180
- Base-36: 11IWOPZ4
Squares and roots of 81684238720
- 81684238720 squared (816842387202) is 6672314855265947238400
- 81684238720 cubed (816842387203) is 545022959452545883308390350848000
-
The
square root of 81684238720 is 285804.5463599205 -
The
cube root of 81684238720 is 4338.8978123769
Scales and comparisons
How big is 81684238720?- 81,684,238,720 seconds is equal to 2,597 years, 15 weeks, 6 days, 10 hours, 18 minutes, 40 seconds.
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To count from 1 to 81,684,238,720 would take you about five thousand, one hundred ninety-four 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 81684238720 cubic inches would be around 361.6 feet tall.
Recreational maths with 81684238720
- 81684238720 backwards is 02783248618
- 81684238720 is a
Harshad number . - The number of decimal digits it has is: 11
- The sum of 81684238720's digits is 49
- More coming soon!
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The information we have on file for 81684238720 includes mathematical data and numerical statistics calculated using standard algorithms and methods. We are adding more all the time. If there are any features you would like to see, please contact us. Information provided for educational use, intellectual curiosity and fun!
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