81007920000
81,007,920,000 is an even composite number composed of five prime numbers multiplied together.
81007920000 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of four hundred eighty divisors.
Prime factorization of 81007920000:
27 × 32 × 54 × 7 × 16073
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 3 × 3 × 5 × 5 × 5 × 5 × 7 × 16073)See below for interesting mathematical facts about the number 81007920000 from the Numbermatics database.
Names of 81007920000
- Cardinal: 81007920000 can be written as Eighty-one billion, seven million, nine hundred twenty thousand.
Scientific notation
- Scientific notation: 8.100792 × 1010
Factors of 81007920000
Divisors of 81007920000
- Number of divisors d(n): 480
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Complete list of divisors:
1 2 3 4 5 6 7 8 9 10 12 14 15 16 18 20 21 24 25 28 30 32 35 36 40 42 45 48 50 56 60 63 64 70 72 75 80 84 90 96 100 105 112 120 125 126 128 140 144 150 160 168 175 180 192 200 210 224 225 240 250 252 280 288 300 315 320 336 350 360 375 384 400 420 448 450 480 500 504 525 560 576 600 625 630 640 672 700 720 750 800 840 875 896 900 960 1000 1008 1050 1120 1125 1152 1200 1250 1260 1344 1400 1440 1500 1575 1600 1680 1750 1800 1875 1920 2000 2016 2100 2240 2250 2400 2500 2520 2625 2688 2800 2880 3000 3150 3200 3360 3500 3600 3750 4000 4032 4200 4375 4480 4500 4800 5000 5040 5250 5600 5625 5760 6000 6300 6720 7000 7200 7500 7875 8000 8064 8400 8750 9000 9600 10000 10080 10500 11200 11250 12000 12600 13125 13440 14000 14400 15000 15750 16000 16073 16800 17500 18000 20000 20160 21000 22400 22500 24000 25200 26250 28000 28800 30000 31500 32146 33600 35000 36000 39375 40000 40320 42000 45000 48000 48219 50400 52500 56000 60000 63000 64292 67200 70000 72000 78750 80000 80365 84000 90000 96438 100800 105000 112000 112511 120000 126000 128584 140000 144000 144657 157500 160730 168000 180000 192876 201600 210000 225022 240000 241095 252000 257168 280000 289314 315000 321460 336000 337533 360000 385752 401825 420000 450044 482190 504000 514336 560000 562555 578628 630000 642920 675066 720000 723285 771504 803650 840000 900088 964380 1008000 1012599 1028672 1125110 1157256 1205475 1260000 1285840 1350132 1446570 1543008 1607300 1680000 1687665 1800176 1928760 2009125 2025198 2057344 2250220 2314512 2410950 2520000 2571680 2700264 2812775 2893140 3086016 3214600 3375330 3600352 3616425 3857520 4018250 4050396 4500440 4629024 4821900 5040000 5062995 5143360 5400528 5625550 5786280 6027375 6172032 6429200 6750660 7200704 7232850 7715040 8036500 8100792 8438325 9000880 9258048 9643800 10045625 10125990 10286720 10801056 11251100 11572560 12054750 12858400 13501320 14063875 14401408 14465700 15430080 16073000 16201584 16876650 18001760 18082125 18516096 19287600 20091250 20251980 21602112 22502200 23145120 24109500 25314975 25716800 27002640 28127750 28931400 30136875 30860160 32146000 32403168 33753300 36003520 36164250 38575200 40182500 40503960 42191625 43204224 45004400 46290240 48219000 50629950 51433600 54005280 56255500 57862800 60273750 64292000 64806336 67506600 70319375 72007040 72328500 77150400 80365000 81007920 84383250 90008800 90410625 92580480 96438000 101259900 108010560 112511000 115725600 120547500 126574875 128584000 129612672 135013200 140638750 144657000 154300800 160730000 162015840 168766500 180017600 180821250 192876000 202519800 210958125 216021120 225022000 231451200 241095000 253149750 257168000 270026400 281277500 289314000 321460000 324031680 337533000 360035200 361642500 385752000 405039600 421916250 450044000 462902400 482190000 506299500 540052800 562555000 578628000 632874375 642920000 648063360 675066000 723285000 771504000 810079200 843832500 900088000 964380000 1012599000 1080105600 1125110000 1157256000 1265748750 1285840000 1350132000 1446570000 1620158400 1687665000 1800176000 1928760000 2025198000 2250220000 2314512000 2531497500 2700264000 2893140000 3240316800 3375330000 3857520000 4050396000 4500440000 5062995000 5400528000 5786280000 6750660000 8100792000 9000880000 10125990000 11572560000 13501320000 16201584000 20251980000 27002640000 40503960000 81007920000
- Sum of all divisors σ(n): 332926616880
- Sum of proper divisors (its aliquot sum) s(n): 251918696880
- 81007920000 is an abundant number, because the sum of its proper divisors (251918696880) is greater than itself. Its abundance is 170910776880
Bases of 81007920000
- Binary: 10010110111000111001011000011100000002
- Hexadecimal: 0x12DC72C380
- Base-36: 117Q0V40
Squares and roots of 81007920000
- 81007920000 squared (810079200002) is 6562283102726400000000
- 81007920000 cubed (810079200003) is 531596904603011993088000000000000
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The
square root of 81007920000 is 284618.9030967549 -
The
cube root of 81007920000 is 4326.8897262843
Scales and comparisons
How big is 81007920000?- 81,007,920,000 seconds is equal to 2,575 years, 41 weeks, 4 days, 16 hours.
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To count from 1 to 81,007,920,000 would take you about five thousand, one hundred fifty-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 81007920000 cubic inches would be around 360.6 feet tall.
Recreational maths with 81007920000
- 81007920000 backwards is 00002970018
- The number of decimal digits it has is: 11
- The sum of 81007920000's digits is 27
- More coming soon!
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The information we have on file for 81007920000 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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