81420493000

Names of 81420493000

• Cardinal: 81420493000 can be written as Eighty-one billion, four hundred twenty million, four hundred ninety-three thousand.

Scientific notation

• Scientific notation: 8.1420493 × 10¹⁰

Factors of 81420493000

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 223

Divisors of 81420493000

• Number of divisors d(n): 384
• Complete list of divisors:
  1 2 4 5 7 8 10 11 14 20 22 25 28 35 40 44 50 55 56 70 77 88 89 100 109 110 125 140 154 175 178 200 218 220 250 275 280 308 350 356 385 436 440 445 500 545 550 616 623 700 712 763 770 872 875 890 979 1000 1090 1100 1199 1246 1375 1400 1526 1540 1750 1780 1925 1958 2180 2200 2225 2398 2492 2725 2750 3052 3080 3115 3500 3560 3815 3850 3916 4360 4450 4796 4895 4984 5450 5500 5995 6104 6230 6853 7000 7630 7700 7832 8393 8900 9592 9625 9701 9790 10900 11000 11125 11881 11990 12460 13625 13706 15260 15400 15575 16786 17800 19075 19250 19402 19580 21800 22250 23762 23980 24475 24920 27250 27412 29975 30520 31150 33572 34265 38150 38500 38804 39160 41965 44500 47524 47960 48505 48950 54500 54824 59405 59950 62300 67144 67907 68530 76300 77000 77608 77875 83167 83930 89000 95048 95375 97010 97900 106711 109000 118810 119900 122375 124600 130691 135814 137060 149875 152600 155750 166334 167860 171325 190750 194020 195800 209825 213422 237620 239800 242525 244750 261382 271628 274120 297025 299750 311500 332668 335720 339535 342650 381500 388040 415835 419650 426844 475240 485050 489500 522764 533555 543256 594050 599500 623000 653455 665336 679070 685300 746977 763000 831670 839300 853688 856625 914837 970100 979000 1045528 1049125 1057409 1067110 1188100 1199000 1212625 1306910 1358140 1370600 1485125 1493954 1663340 1678600 1697675 1713250 1829674 1940200 2079175 2098250 2114818 2134220 2376200 2425250 2613820 2667775 2716280 2970250 2987908 3267275 3326680 3395350 3426500 3659348 3734885 4158350 4196500 4229636 4268440 4574185 4850500 5227640 5287045 5335550 5940500 5975816 6534550 6790700 6853000 7318696 7401863 7469770 8316700 8393000 8459272 8488375 9148370 9701000 10395875 10574090 10671100 11631499 11881000 13069100 13338875 13581400 14803726 14939540 16336375 16633400 16976750 18296740 18674425 20791750 21148180 21342200 22870925 23262998 26138200 26435225 26677750 29607452 29879080 32672750 33953500 36593480 37009315 37348850 41583500 42296360 45741850 46525996 52870450 53355500 58157495 59214904 65345500 67907000 74018630 74697700 81420493 83167000 91483700 93051992 93372125 105740900 106711000 114354625 116314990 130691000 132176125 148037260 149395400 162840986 182967400 185046575 186744250 211481800 228709250 232629980 264352250 290787475 296074520 325681972 370093150 373488500 407102465 457418500 465259960 528704500 581574950 651363944 740186300 746977000 814204930 914837000 925232875 1057409000 1163149900 1453937375 1480372600 1628409860 1850465750 2035512325 2326299800 2907874750 3256819720 3700931500 4071024650 5815749500 7401863000 8142049300 10177561625 11631499000 16284098600 20355123250 40710246500 81420493000
• Sum of all divisors σ(n): 242429241600
• Sum of proper divisors (its aliquot sum) s(n): 161008748600
• 81420493000 is an abundant number, because the sum of its proper divisors (161008748600) is greater than itself. Its abundance is 79588255600

Bases of 81420493000

• Binary: 1001011110101000010100010000011001000₂
• Hexadecimal: 0x12F50A20C8
• Base-36: 11EJNQH4

Squares and roots of 81420493000

• 81420493000 squared (81420493000²) is 6629296680363049000000
• 81420493000 cubed (81420493000³) is 539760603958422868563157000000000
• The square root of 81420493000 is 285342.7640575453
• The cube root of 81420493000 is 4334.2229015277

Scales and comparisons

• 81,420,493,000 seconds is equal to 2,588 years, 47 weeks, 5 days, 19 hours, 36 minutes, 40 seconds.
• To count from 1 to 81,420,493,000 would take you about five thousand, one hundred seventy-seven 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 81420493000 cubic inches would be around 361.2 feet tall.

Recreational maths with 81420493000

• 81420493000 backwards is 00039402418
• The number of decimal digits it has is: 11
• The sum of 81420493000's digits is 31
• More coming soon!