81242672490
81,242,672,490 is an even composite number composed of six prime numbers multiplied together.
81242672490 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of one hundred twenty-eight divisors.
Prime factorization of 81242672490:
2 × 33 × 5 × 7 × 61 × 704681
(2 × 3 × 3 × 3 × 5 × 7 × 61 × 704681)See below for interesting mathematical facts about the number 81242672490 from the Numbermatics database.
Names of 81242672490
- Cardinal: 81242672490 can be written as Eighty-one billion, two hundred forty-two million, six hundred seventy-two thousand, four hundred ninety.
Scientific notation
- Scientific notation: 8.124267249 × 1010
Factors of 81242672490
Divisors of 81242672490
- Number of divisors d(n): 128
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Complete list of divisors:
1 2 3 5 6 7 9 10 14 15 18 21 27 30 35 42 45 54 61 63 70 90 105 122 126 135 183 189 210 270 305 315 366 378 427 549 610 630 854 915 945 1098 1281 1647 1830 1890 2135 2562 2745 3294 3843 4270 5490 6405 7686 8235 11529 12810 16470 19215 23058 38430 57645 115290 704681 1409362 2114043 3523405 4228086 4932767 6342129 7046810 9865534 10570215 12684258 14798301 19026387 21140430 24663835 29596602 31710645 38052774 42985541 44394903 49327670 63421290 73991505 85971082 88789806 95131935 128956623 133184709 147983010 190263870 214927705 221974515 257913246 266369418 300898787 386869869 429855410 443949030 601797574 644783115 665923545 773739738 902696361 1160609607 1289566230 1331847090 1504493935 1805392722 1934349345 2321219214 2708089083 3008987870 3868698690 4513481805 5416178166 5803048035 8124267249 9026963610 11606096070 13540445415 16248534498 27080890830 40621336245 81242672490
- Sum of all divisors σ(n): 251656035840
- Sum of proper divisors (its aliquot sum) s(n): 170413363350
- 81242672490 is an abundant number, because the sum of its proper divisors (170413363350) is greater than itself. Its abundance is 89170690860
Bases of 81242672490
- Binary: 10010111010100111000011001101011010102
- Hexadecimal: 0x12EA70CD6A
- Base-36: 11BLSFAI
Squares and roots of 81242672490
- 81242672490 squared (812426724902) is 6600371833317402800100
- 81242672490 cubed (812426724903) is 536231847166426625905933239249000
-
The
square root of 81242672490 is 285031.0026821643 -
The
cube root of 81242672490 is 4331.0653202117
Scales and comparisons
How big is 81242672490?- 81,242,672,490 seconds is equal to 2,583 years, 13 weeks, 5 days, 17 hours, 1 minute, 30 seconds.
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To count from 1 to 81,242,672,490 would take you about five thousand, one hundred sixty-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 81242672490 cubic inches would be around 360.9 feet tall.
Recreational maths with 81242672490
- 81242672490 backwards is 09427624218
- 81242672490 is a
Harshad number . - The number of decimal digits it has is: 11
- The sum of 81242672490's digits is 45
- More coming soon!
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The information we have on file for 81242672490 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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