81079320140
81,079,320,140 is an even composite number composed of seven prime numbers multiplied together.
81079320140 is an even composite number. It is composed of seven distinct prime numbers multiplied together. It has a total of two hundred eighty-eight divisors.
Prime factorization of 81079320140:
22 × 5 × 7 × 13 × 312 × 151 × 307
(2 × 2 × 5 × 7 × 13 × 31 × 31 × 151 × 307)See below for interesting mathematical facts about the number 81079320140 from the Numbermatics database.
Names of 81079320140
- Cardinal: 81079320140 can be written as Eighty-one billion, seventy-nine million, three hundred twenty thousand, one hundred forty.
Scientific notation
- Scientific notation: 8.107932014 × 1010
Factors of 81079320140
Divisors of 81079320140
- Number of divisors d(n): 288
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Complete list of divisors:
1 2 4 5 7 10 13 14 20 26 28 31 35 52 62 65 70 91 124 130 140 151 155 182 217 260 302 307 310 364 403 434 455 604 614 620 755 806 868 910 961 1057 1085 1228 1510 1535 1612 1820 1922 1963 2015 2114 2149 2170 2821 3020 3070 3844 3926 3991 4030 4228 4298 4340 4681 4805 5285 5642 6140 6727 7852 7982 8060 8596 9362 9517 9610 9815 10570 10745 11284 12493 13454 13741 14105 15964 18724 19034 19220 19630 19955 21140 21490 23405 24986 26908 27482 27937 28210 32767 33635 38068 39260 39910 42980 46357 46810 47585 49972 54964 55874 56420 60853 62465 65534 66619 67270 68705 79820 87451 92714 93620 95170 111748 121706 123721 124930 131068 133238 134540 137410 139685 145111 163835 174902 185428 190340 231785 243412 247442 249860 266476 274820 279370 290222 295027 304265 324499 327670 333095 349804 425971 437255 463570 494884 558740 580444 590054 602641 608530 618605 648998 655340 666190 725555 851942 866047 874510 927140 1015777 1180108 1205282 1217060 1237210 1297996 1332380 1437067 1451110 1475135 1622495 1703884 1732094 1749020 1886443 2031554 2065189 2129855 2410564 2474420 2874134 2902220 2950270 3013205 3244990 3464188 3772886 3835351 4063108 4130378 4218487 4259710 4330235 5078885 5748268 5900540 6026410 6489980 7185335 7545772 7670702 8260756 8436974 8519420 8660470 9432215 10059469 10157770 10325945 12052820 13205101 14370670 15341404 16873948 17320940 18681871 18864430 19176755 20118938 20315540 20651890 21092435 26410202 26847457 28741340 37363742 37728860 38353510 40237876 41303780 42184870 44549077 50297345 52820404 53694914 66025505 74727484 76707020 84369740 89098154 93409355 100594690 107389828 130773097 132051010 134237285 178196308 186818710 201189380 222745385 261546194 264102020 268474570 311843539 373637420 445490770 523092388 536949140 579138001 623687078 653865485 890981540 1158276002 1247374156 1307730970 1559217695 2316552004 2615461940 2895690005 3118435390 4053966007 5791380010 6236870780 8107932014 11582760020 16215864028 20269830035 40539660070 81079320140
- Sum of all divisors σ(n): 218680906752
- Sum of proper divisors (its aliquot sum) s(n): 137601586612
- 81079320140 is an abundant number, because the sum of its proper divisors (137601586612) is greater than itself. Its abundance is 56522266472
Bases of 81079320140
- Binary: 10010111000001011010000111110010011002
- Hexadecimal: 0x12E0B43E4C
- Base-36: 118WJ7T8
Squares and roots of 81079320140
- 81079320140 squared (810793201402) is 6573856154364609619600
- 81079320140 cubed (810793201403) is 533003787694037441633672018744000
-
The
square root of 81079320140 is 284744.3065980425 -
The
cube root of 81079320140 is 4328.1605888955
Scales and comparisons
How big is 81079320140?- 81,079,320,140 seconds is equal to 2,578 years, 3 weeks, 5 days, 1 hour, 22 minutes, 20 seconds.
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To count from 1 to 81,079,320,140 would take you about five thousand, one hundred fifty-six 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 81079320140 cubic inches would be around 360.7 feet tall.
Recreational maths with 81079320140
- 81079320140 backwards is 04102397018
- 81079320140 is a
Harshad number . - The number of decimal digits it has is: 11
- The sum of 81079320140's digits is 35
- More coming soon!
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