81029130
81,029,130 is an even composite number composed of seven prime numbers multiplied together.
81029130 is an even composite number. It is composed of seven distinct prime numbers multiplied together. It has a total of one hundred twenty-eight divisors.
Prime factorization of 81029130:
2 × 3 × 5 × 7 × 13 × 67 × 443
See below for interesting mathematical facts about the number 81029130 from the Numbermatics database.
Names of 81029130
- Cardinal: 81029130 can be written as Eighty-one million, twenty-nine thousand, one hundred thirty.
Scientific notation
- Scientific notation: 8.102913 × 107
Factors of 81029130
Divisors of 81029130
- Number of divisors d(n): 128
-
Complete list of divisors:
1 2 3 5 6 7 10 13 14 15 21 26 30 35 39 42 65 67 70 78 91 105 130 134 182 195 201 210 273 335 390 402 443 455 469 546 670 871 886 910 938 1005 1329 1365 1407 1742 2010 2215 2345 2613 2658 2730 2814 3101 4355 4430 4690 5226 5759 6097 6202 6645 7035 8710 9303 11518 12194 13065 13290 14070 15505 17277 18291 18606 26130 28795 29681 30485 31010 34554 36582 40313 46515 57590 59362 60970 80626 86385 89043 91455 93030 120939 148405 172770 178086 182910 201565 207767 241878 296810 385853 403130 415534 445215 604695 623301 771706 890430 1038835 1157559 1209390 1246602 1929265 2077670 2315118 2700971 3116505 3858530 5401942 5787795 6233010 8102913 11575590 13504855 16205826 27009710 40514565 81029130
- Sum of all divisors σ(n): 243468288
- Sum of proper divisors (its aliquot sum) s(n): 162439158
- 81029130 is an abundant number, because the sum of its proper divisors (162439158) is greater than itself. Its abundance is 81410028
Bases of 81029130
- Binary: 1001101010001101000000010102
- Hexadecimal: 0x4D4680A
- Base-36: 1C8QH6
Squares and roots of 81029130
- 81029130 squared (810291302) is 6565719908556900
- 81029130 cubed (810291303) is 532014572014045162497000
-
The
square root of 81029130 is 9001.6181878593 -
The
cube root of 81029130 is 432.7267324437
Scales and comparisons
How big is 81029130?- 81,029,130 seconds is equal to 2 years, 29 weeks, 6 days, 20 hours, 5 minutes, 30 seconds.
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To count from 1 to 81,029,130 would take you about 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 81029130 cubic inches would be around 36.1 feet tall.
Recreational maths with 81029130
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The information we have on file for 81029130 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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