81304387290
81,304,387,290 is an even composite number composed of seven prime numbers multiplied together.
81304387290 is an even composite number. It is composed of seven distinct prime numbers multiplied together. It has a total of three hundred eighty-four divisors.
Prime factorization of 81304387290:
2 × 32 × 5 × 73 × 73 × 109 × 331
(2 × 3 × 3 × 5 × 7 × 7 × 7 × 73 × 109 × 331)See below for interesting mathematical facts about the number 81304387290 from the Numbermatics database.
Names of 81304387290
- Cardinal: 81304387290 can be written as Eighty-one billion, three hundred four million, three hundred eighty-seven thousand, two hundred ninety.
Scientific notation
- Scientific notation: 8.130438729 × 1010
Factors of 81304387290
Divisors of 81304387290
- Number of divisors d(n): 384
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Complete list of divisors:
1 2 3 5 6 7 9 10 14 15 18 21 30 35 42 45 49 63 70 73 90 98 105 109 126 146 147 210 218 219 245 294 315 327 331 343 365 438 441 490 511 545 630 654 657 662 686 730 735 763 882 981 993 1022 1029 1090 1095 1314 1470 1526 1533 1635 1655 1715 1962 1986 2058 2190 2205 2289 2317 2555 2979 3066 3087 3270 3285 3310 3430 3577 3815 4410 4578 4599 4634 4905 4965 5110 5145 5341 5958 6174 6570 6867 6951 7154 7630 7665 7957 9198 9810 9930 10290 10682 10731 11445 11585 13734 13902 14895 15330 15435 15914 16023 16219 17885 20853 21462 22890 22995 23170 23871 24163 25039 26705 29790 30870 32046 32193 32438 34335 34755 35770 36079 37387 39785 41706 45990 47742 48069 48326 48657 50078 53410 53655 55699 64386 68670 69510 71613 72158 72489 74774 75117 79570 80115 81095 96138 97314 104265 107310 108237 111398 112161 113533 119355 120815 125195 143226 144978 145971 150234 160230 160965 162190 167097 169141 180395 186935 208530 216474 217467 224322 225351 227066 238710 240345 241630 243285 250390 252553 278495 291942 321930 324711 334194 336483 338282 340599 358065 360790 362445 373870 375585 389893 434934 450702 480690 486570 501291 505106 507423 541185 556990 560805 567665 649422 672966 681198 716130 724890 729855 751170 757659 779786 835485 845705 1002582 1014846 1021797 1082370 1087335 1121610 1126755 1135330 1169679 1183987 1262765 1459710 1515318 1522269 1623555 1670970 1682415 1691410 1702995 1767871 1949465 2043594 2174670 2253510 2272977 2339358 2367974 2506455 2525530 2537115 2633767 2729251 3044538 3247110 3364830 3405990 3509037 3535742 3551961 3788295 3898930 4545954 5012910 5074230 5108985 5267534 5303613 5458502 5848395 5919935 7018074 7103922 7576590 7611345 7901301 8187753 8287909 8839355 10217970 10607226 10655883 11364885 11696790 11839870 12375097 13168835 13646255 15222690 15802602 15910839 16375506 16575818 17545185 17678710 17759805 18436369 21311766 22729770 23703903 24563259 24750194 24863727 26337670 26518065 27292510 31821678 35090370 35519610 36872738 37125291 39506505 40938765 41439545 47407806 49126518 49727454 53036130 53279415 55309107 61875485 74250582 74591181 79013010 79554195 81877530 82879090 92181845 106558830 110618214 111375873 118519515 122816295 123750970 124318635 129054583 149182362 159108390 165927321 184363690 185626455 222751746 237039030 245632590 248637270 258109166 276545535 331854642 371252910 372955905 387163749 553091070 556879365 645272915 745911810 774327498 829636605 903382081 1113758730 1161491247 1290545830 1659273210 1806764162 1935818745 2322982494 2710146243 3871637490 4516910405 5420292486 5807456235 8130438729 9033820810 11614912470 13550731215 16260877458 27101462430 40652193645 81304387290
- Sum of all divisors σ(n): 252952128000
- Sum of proper divisors (its aliquot sum) s(n): 171647740710
- 81304387290 is an abundant number, because the sum of its proper divisors (171647740710) is greater than itself. Its abundance is 90343353420
Bases of 81304387290
- Binary: 10010111011100001111001111110110110102
- Hexadecimal: 0x12EE1E7EDA
- Base-36: 11CMJ6QI
Squares and roots of 81304387290
- 81304387290 squared (813043872902) is 6610403392602313544100
- 81304387290 cubed (813043872903) is 537454797575268421339518894489000
-
The
square root of 81304387290 is 285139.2419327789 -
The
cube root of 81304387290 is 4332.1617193051
Scales and comparisons
How big is 81304387290?- 81,304,387,290 seconds is equal to 2,585 years, 11 weeks, 6 days, 1 minute, 30 seconds.
-
To count from 1 to 81,304,387,290 would take you about five thousand, one hundred seventy 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 81304387290 cubic inches would be around 361 feet tall.
Recreational maths with 81304387290
- 81304387290 backwards is 09278340318
- 81304387290 is a
Harshad number . - The number of decimal digits it has is: 11
- The sum of 81304387290's digits is 45
- More coming soon!
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The information we have on file for 81304387290 includes mathematical data and numerical statistics calculated using standard algorithms and methods. We are adding more all the time. If there are any features you would like to see, please contact us. Information provided for educational use, intellectual curiosity and fun!
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