81989200800

Names of 81989200800

• Cardinal: 81989200800 can be written as Eighty-one billion, nine hundred eighty-nine million, two hundred thousand, eight hundred.

Scientific notation

• Scientific notation: 8.19892008 × 10¹⁰

Factors of 81989200800

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 1633

Divisors of 81989200800

• Number of divisors d(n): 648
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 13 15 16 18 20 24 25 26 30 32 36 39 40 43 45 48 50 52 60 65 72 75 78 80 86 90 96 100 104 117 120 129 130 144 150 156 160 169 172 180 195 200 208 215 225 234 240 258 260 288 300 312 325 338 344 360 387 390 400 416 430 450 468 480 507 516 520 559 585 600 624 645 650 676 688 720 774 780 800 845 860 900 936 975 1014 1032 1040 1075 1118 1170 1200 1248 1290 1300 1352 1376 1440 1521 1548 1560 1567 1677 1690 1720 1800 1872 1935 1950 2028 2064 2080 2150 2236 2340 2400 2535 2580 2600 2704 2795 2925 3042 3096 3120 3134 3225 3354 3380 3440 3600 3744 3870 3900 4056 4128 4225 4300 4472 4680 4701 5031 5070 5160 5200 5408 5590 5850 6084 6192 6240 6268 6450 6708 6760 6880 7200 7267 7605 7740 7800 7835 8112 8385 8450 8600 8944 9360 9402 9675 10062 10140 10320 10400 11180 11700 12168 12384 12536 12675 12900 13416 13520 13975 14103 14534 15210 15480 15600 15670 16224 16770 16900 17200 17888 18720 18804 19350 20124 20280 20371 20640 21801 22360 23400 23505 24336 25072 25155 25350 25800 26832 27040 27950 28206 29068 30420 30960 31200 31340 33540 33800 34400 36335 37608 38025 38700 39175 40248 40560 40742 41925 43602 44720 46800 47010 48672 50144 50310 50700 51600 53664 55900 56412 58136 60840 61113 61920 62680 65403 67080 67381 67600 70515 72670 75216 76050 77400 78350 80496 81120 81484 83850 87204 89440 93600 94020 100620 101400 101855 103200 109005 111800 112824 116272 117525 121680 122226 125360 125775 130806 134160 134762 135200 141030 145340 150432 152100 154800 156700 160992 162968 167700 174408 181675 183339 188040 201240 202143 202800 203710 218010 223600 225648 232544 235050 243360 244452 250720 251550 261612 264823 268320 269524 282060 290680 304200 305565 309600 313400 325936 327015 335400 336905 348816 352575 363350 366678 376080 402480 404286 405600 407420 436020 447200 451296 470100 488904 503100 509275 523224 529646 539048 545025 564120 581360 606429 608400 611130 626800 651872 654030 670800 673810 697632 705150 726700 733356 752160 794469 804960 808572 814840 872040 875953 916695 940200 977808 1006200 1010715 1018550 1046448 1059292 1078096 1090050 1128240 1162720 1212858 1216800 1222260 1253600 1308060 1324115 1341600 1347620 1410300 1453400 1466712 1527825 1588938 1617144 1629680 1635075 1684525 1744080 1751906 1833390 1880400 1955616 2012400 2021430 2037100 2092896 2118584 2156192 2180100 2256480 2383407 2425716 2444520 2616120 2627859 2648230 2695240 2820600 2906800 2933424 3032145 3055650 3177876 3234288 3259360 3270150 3369050 3488160 3503812 3666780 3760800 3972345 4024800 4042860 4074200 4237168 4360200 4379765 4583475 4766814 4851432 4889040 5053575 5232240 5255718 5296460 5390480 5641200 5813600 5866848 6064290 6111300 6355752 6468576 6540300 6620575 6738100 7007624 7333560 7883577 7944690 8085720 8148400 8474336 8720400 8759530 9166950 9533628 9702864 9778080 10107150 10464480 10511436 10592920 10780960 11282400 11387389 11917035 12128580 12222600 12711504 13080600 13139295 13241150 13476200 14015248 14667120 15160725 15767154 15889380 16171440 16296800 17440800 17519060 18333900 19067256 19405728 19861725 20214300 21022872 21185840 21898825 22774778 23834070 24257160 24445200 25423008 26161200 26278590 26482300 26952400 28030496 29334240 30321450 31534308 31778760 32342880 34162167 35038120 36667800 38134512 39417885 39723450 40428600 42045744 42371680 43797650 45549556 47668140 48514320 48890400 52322400 52557180 52964600 53904800 56936945 59585175 60642900 63068616 63557520 65696475 68324334 70076240 73335600 76269024 78835770 79446900 80857200 84091488 87595300 91099112 95336280 97028640 102486501 105114360 105929200 113873890 119170350 121285800 126137232 127115040 131392950 136648668 140152480 146671200 157671540 158893800 161714400 170810835 175190600 182198224 190672560 197089425 204973002 210228720 211858400 227747780 238340700 242571600 252274464 262785900 273297336 284684725 315343080 317787600 341621670 350381200 364396448 381345120 394178850 409946004 420457440 455495560 476681400 485143200 512432505 525571800 546594672 569369450 630686160 635575200 683243340 700762400 788357700 819892008 854054175 910991120 953362800 1024865010 1051143600 1093189344 1138738900 1261372320 1366486680 1576715400 1639784016 1708108350 1821982240 1906725600 2049730020 2102287200 2277477800 2562162525 2732973360 3153430800 3279568032 3416216700 4099460040 4554955600 5124325050 5465946720 6306861600 6832433400 8198920080 9109911200 10248650100 13664866800 16397840160 20497300200 27329733600 40994600400 81989200800
• Sum of all divisors σ(n): 320549733504
• Sum of proper divisors (its aliquot sum) s(n): 238560532704
• 81989200800 is an abundant number, because the sum of its proper divisors (238560532704) is greater than itself. Its abundance is 156571331904

Bases of 81989200800

• Binary: 1001100010110111011111110101110100000₂
• Hexadecimal: 0x1316EFEBA0
• Base-36: 11NY9480

Squares and roots of 81989200800

• 81989200800 squared (81989200800²) is 6722229047822720640000
• 81989200800 cubed (81989200800³) is 551150187225529845355264512000000
• The square root of 81989200800 is 286337.5644235317
• The cube root of 81989200800 is 4344.2907581905

Scales and comparisons

• 81,989,200,800 seconds is equal to 2,607 years, 1 day, 2 hours.
• To count from 1 to 81,989,200,800 would take you about five thousand, two hundred fourteen 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 81989200800 cubic inches would be around 362 feet tall.

Recreational maths with 81989200800

• 81989200800 backwards is 00800298918
• 81989200800 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 81989200800's digits is 45
• More coming soon!