81079830
81,079,830 is an even composite number composed of six prime numbers multiplied together.
What does the number 81079830 look like?
This visualization shows the relationship between its 6 prime factors (large circles) and 144 divisors.
81079830 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of one hundred forty-four divisors.
Prime factorization of 81079830:
2 × 32 × 5 × 13 × 232 × 131
(2 × 3 × 3 × 5 × 13 × 23 × 23 × 131)See below for interesting mathematical facts about the number 81079830 from the Numbermatics database.
Names of 81079830
- Cardinal: 81079830 can be written as Eighty-one million, seventy-nine thousand, eight hundred thirty.
Scientific notation
- Scientific notation: 8.107983 × 107
Factors of 81079830
Divisors of 81079830
- Number of divisors d(n): 144
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Complete list of divisors:
1 2 3 5 6 9 10 13 15 18 23 26 30 39 45 46 65 69 78 90 115 117 130 131 138 195 207 230 234 262 299 345 390 393 414 529 585 598 655 690 786 897 1035 1058 1170 1179 1310 1495 1587 1703 1794 1965 2070 2358 2645 2691 2990 3013 3174 3406 3930 4485 4761 5109 5290 5382 5895 6026 6877 7935 8515 8970 9039 9522 10218 11790 13455 13754 15065 15327 15870 17030 18078 20631 23805 25545 26910 27117 30130 30654 34385 39169 41262 45195 47610 51090 54234 61893 68770 69299 76635 78338 90390 103155 117507 123786 135585 138598 153270 195845 206310 207897 235014 271170 309465 346495 352521 391690 415794 587535 618930 623691 692990 705042 900887 1039485 1175070 1247382 1762605 1801774 2078970 2702661 3118455 3525210 4504435 5405322 6236910 8107983 9008870 13513305 16215966 27026610 40539915 81079830
- Sum of all divisors σ(n): 239134896
- Sum of proper divisors (its aliquot sum) s(n): 158055066
- 81079830 is an abundant number, because the sum of its proper divisors (158055066) is greater than itself. Its abundance is 76975236
Bases of 81079830
- Binary: 1001101010100101110000101102
- Hexadecimal: 0x4D52E16
- Base-36: 1C9TLI
Squares and roots of 81079830
- 81079830 squared (810798302) is 6573938832828900
- 81079830 cubed (810798303) is 533013842996165631087000
-
The
square root of 81079830 is 9004.4339078035 -
The
cube root of 81079830 is 432.8169661293
Scales and comparisons
How big is 81079830?- 81,079,830 seconds is equal to 2 years, 30 weeks, 10 hours, 10 minutes, 30 seconds.
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To count from 1 to 81,079,830 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 81079830 cubic inches would be around 36.1 feet tall.
Recreational maths with 81079830
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