81323052800

Names of 81323052800

• Cardinal: 81323052800 can be written as Eighty-one billion, three hundred twenty-three million, fifty-two thousand, eight hundred.

Scientific notation

• Scientific notation: 8.13230528 × 10¹⁰

Factors of 81323052800

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 14
• Sum of prime factors: 761

Divisors of 81323052800

• Number of divisors d(n): 432
• Complete list of divisors:
  1 2 4 5 8 10 11 16 20 22 25 29 32 40 44 50 55 58 61 64 80 88 100 110 116 122 128 145 160 176 200 220 232 244 256 275 290 305 319 320 352 400 440 464 488 550 580 610 638 640 653 671 704 725 800 880 928 976 1100 1160 1220 1276 1280 1306 1342 1408 1450 1525 1595 1600 1760 1769 1856 1952 2200 2320 2440 2552 2612 2684 2816 2900 3050 3190 3200 3265 3355 3520 3538 3712 3904 4400 4640 4880 5104 5224 5368 5800 6100 6380 6400 6530 6710 7040 7076 7183 7424 7808 7975 8800 8845 9280 9760 10208 10448 10736 11600 12200 12760 13060 13420 14080 14152 14366 15616 15950 16325 16775 17600 17690 18560 18937 19459 19520 20416 20896 21472 23200 24400 25520 26120 26840 28304 28732 31900 32650 33550 35200 35380 35915 37120 37874 38918 39040 39833 40832 41792 42944 44225 46400 48800 51040 52240 53680 56608 57464 63800 65300 67100 70400 70760 71830 75748 77836 78080 79666 81664 83584 85888 88450 92800 94685 97295 97600 102080 104480 107360 113216 114928 127600 130600 134200 141520 143660 151496 155672 159332 167168 171776 176900 179575 185600 189370 194590 195200 199165 204160 208307 208960 214720 226432 229856 255200 261200 268400 283040 287320 302992 311344 318664 353800 359150 378740 389180 390400 398330 408320 416614 417920 429440 438163 452864 459712 473425 486475 510400 522400 536800 566080 574640 605984 622688 637328 707600 718300 757480 778360 796660 833228 835840 858880 876326 919424 946850 972950 995825 1020800 1041535 1044800 1073600 1132160 1149280 1155157 1211968 1245376 1274656 1415200 1436600 1514960 1556720 1593320 1666456 1752652 1838848 1893700 1945900 1991650 2041600 2083070 2089600 2147200 2190815 2264320 2298560 2310314 2423936 2490752 2549312 2830400 2873200 3029920 3113440 3186640 3332912 3505304 3787400 3891800 3983300 4166140 4179200 4294400 4381630 4597120 4620628 4847872 4981504 5098624 5207675 5660800 5746400 5775785 6059840 6226880 6373280 6665824 7010608 7574800 7783600 7966600 8332280 8763260 9194240 9241256 10197248 10415350 10954075 11321600 11492800 11551570 12119680 12453760 12706727 12746560 13331648 14021216 15149600 15567200 15933200 16664560 17526520 18482512 20830700 21908150 22985600 23103140 24239360 24907520 25413454 25493120 26663296 28042432 28878925 30299200 31134400 31866400 33329120 35053040 36965024 41661400 43816300 45971200 46206280 50826908 50986240 53326592 56084864 57757850 60598400 62268800 63533635 63732800 66658240 70106080 73930048 83322800 87632600 92412560 101653816 112169728 115515700 121196800 124537600 127067270 127465600 133316480 140212160 147860096 166645600 175265200 184825120 203307632 231031400 254134540 254931200 266632960 280424320 295720192 317668175 333291200 350530400 369650240 406615264 462062800 508269080 560848640 635336350 666582400 701060800 739300480 813230528 924125600 1016538160 1270672700 1333164800 1402121600 1478600960 1626461056 1848251200 2033076320 2541345400 2804243200 3252922112 3696502400 4066152640 5082690800 7393004800 8132305280 10165381600 16264610560 20330763200 40661526400 81323052800
• Sum of all divisors σ(n): 231235512480
• Sum of proper divisors (its aliquot sum) s(n): 149912459680
• 81323052800 is an abundant number, because the sum of its proper divisors (149912459680) is greater than itself. Its abundance is 68589406880

Bases of 81323052800

• Binary: 1001011101111001110110100111100000000₂
• Hexadecimal: 0x12EF3B4F00
• Base-36: 11CXN94W

Squares and roots of 81323052800

• 81323052800 squared (81323052800²) is 6613438916711587840000
• 81323052800 cubed (81323052800³) is 537825042213311260284157952000000
• The square root of 81323052800 is 285171.9705721445
• The cube root of 81323052800 is 4332.4932135961

Scales and comparisons

• 81,323,052,800 seconds is equal to 2,585 years, 42 weeks, 5 days, 53 minutes, 20 seconds.
• To count from 1 to 81,323,052,800 would take you about five thousand, one hundred seventy-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 81323052800 cubic inches would be around 361 feet tall.

Recreational maths with 81323052800

• 81323052800 backwards is 00825032318
• 81323052800 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 81323052800's digits is 32
• More coming soon!