81351829440
81,351,829,440 is an even composite number composed of six prime numbers multiplied together.
81351829440 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of four hundred forty-eight divisors.
Prime factorization of 81351829440:
26 × 33 × 5 × 7 × 139 × 9677
(2 × 2 × 2 × 2 × 2 × 2 × 3 × 3 × 3 × 5 × 7 × 139 × 9677)See below for interesting mathematical facts about the number 81351829440 from the Numbermatics database.
Names of 81351829440
- Cardinal: 81351829440 can be written as Eighty-one billion, three hundred fifty-one million, eight hundred twenty-nine thousand, four hundred forty.
Scientific notation
- Scientific notation: 8.135182944 × 1010
Factors of 81351829440
Divisors of 81351829440
- Number of divisors d(n): 448
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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 27 28 30 32 35 36 40 42 45 48 54 56 60 63 64 70 72 80 84 90 96 105 108 112 120 126 135 139 140 144 160 168 180 189 192 210 216 224 240 252 270 278 280 288 315 320 336 360 378 417 420 432 448 480 504 540 556 560 576 630 672 695 720 756 834 840 864 945 960 973 1008 1080 1112 1120 1251 1260 1344 1390 1440 1512 1668 1680 1728 1890 1946 2016 2085 2160 2224 2240 2502 2520 2780 2880 2919 3024 3336 3360 3753 3780 3892 4032 4170 4320 4448 4865 5004 5040 5560 5838 6048 6255 6672 6720 7506 7560 7784 8340 8640 8757 8896 9677 9730 10008 10080 11120 11676 12096 12510 13344 14595 15012 15120 15568 16680 17514 18765 19354 19460 20016 20160 22240 23352 25020 26271 26688 29031 29190 30024 30240 31136 33360 35028 37530 38708 38920 40032 43785 44480 46704 48385 50040 52542 58062 58380 60048 60480 62272 66720 67739 70056 75060 77416 77840 80064 87093 87570 93408 96770 100080 105084 116124 116760 120096 131355 133440 135478 140112 145155 150120 154832 155680 174186 175140 186816 193540 200160 203217 210168 232248 233520 240192 261279 262710 270956 280224 290310 300240 309664 311360 338695 348372 350280 387080 400320 406434 420336 435465 464496 467040 522558 525420 541912 560448 580620 600480 609651 619328 677390 696744 700560 774160 812868 840672 870930 928992 934080 1016085 1045116 1050840 1083824 1161240 1200960 1219302 1306395 1345103 1354780 1393488 1401120 1548320 1625736 1681344 1741860 1828953 1857984 2032170 2090232 2101680 2167648 2322480 2438604 2612790 2690206 2709560 2786976 2802240 3048255 3096640 3251472 3483720 3657906 4035309 4064340 4180464 4203360 4335296 4644960 4877208 5225580 5380412 5419120 5573952 6096510 6502944 6725515 6967440 7315812 8070618 8128680 8360928 8406720 9144765 9289920 9415721 9754416 10451160 10760824 10838240 12105927 12193020 13005888 13451030 13934880 14631624 16141236 16257360 16721856 18289530 18831442 19508832 20176545 20902320 21521648 21676480 24211854 24386040 26902060 27869760 28247163 29263248 32282472 32514720 36317781 36579060 37662884 39017664 40353090 41804640 43043296 47078605 48423708 48772080 53804120 56494326 58526496 60529635 64564944 65029440 72635562 73158120 75325768 80706180 83609280 84741489 86086592 94157210 96847416 97544160 107608240 112988652 117052992 121059270 129129888 141235815 145271124 146316240 150651536 161412360 169482978 181588905 188314420 193694832 195088320 215216480 225977304 242118540 254224467 258259776 282471630 290542248 292632480 301303072 322824720 338965956 363177810 376628840 387389664 423707445 430432960 451954608 484237080 508448934 564943260 581084496 585264960 602606144 645649440 677931912 726355620 753257680 774779328 847414890 903909216 968474160 1016897868 1129886520 1162168992 1271122335 1291298880 1355863824 1452711240 1506515360 1694829780 1807818432 1936948320 2033795736 2259773040 2324337984 2542244670 2711727648 2905422480 3013030720 3389659560 3873896640 4067591472 4519546080 5084489340 5423455296 5810844960 6779319120 8135182944 9039092160 10168978680 11621689920 13558638240 16270365888 20337957360 27117276480 40675914720 81351829440
- Sum of all divisors σ(n): 330383692800
- Sum of proper divisors (its aliquot sum) s(n): 249031863360
- 81351829440 is an abundant number, because the sum of its proper divisors (249031863360) is greater than itself. Its abundance is 167680033920
Bases of 81351829440
- Binary: 10010111100001111001001100111110000002
- Hexadecimal: 0x12F0F267C0
- Base-36: 11DES1C0
Squares and roots of 81351829440
- 81351829440 squared (813518294402) is 6618120153234850713600
- 81351829440 cubed (813518294403) is 538396181919388239516649488384000
-
The
square root of 81351829440 is 285222.4209980695 -
The
cube root of 81351829440 is 4333.0041793905
Scales and comparisons
How big is 81351829440?- 81,351,829,440 seconds is equal to 2,586 years, 38 weeks, 2 days, 2 hours, 24 minutes.
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To count from 1 to 81,351,829,440 would take you about five thousand, one hundred seventy-three 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 81351829440 cubic inches would be around 361.1 feet tall.
Recreational maths with 81351829440
- 81351829440 backwards is 04492815318
- 81351829440 is a
Harshad number . - The number of decimal digits it has is: 11
- The sum of 81351829440's digits is 45
- More coming soon!
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