81333980
81,333,980 is an even composite number composed of seven prime numbers multiplied together.
81333980 is an even composite number. It is composed of seven distinct prime numbers multiplied together. It has a total of one hundred ninety-two divisors.
Prime factorization of 81333980:
22 × 5 × 7 × 13 × 23 × 29 × 67
(2 × 2 × 5 × 7 × 13 × 23 × 29 × 67)See below for interesting mathematical facts about the number 81333980 from the Numbermatics database.
Names of 81333980
- Cardinal: 81333980 can be written as Eighty-one million, three hundred thirty-three thousand, nine hundred eighty.
Scientific notation
- Scientific notation: 8.133398 × 107
Factors of 81333980
Divisors of 81333980
- Number of divisors d(n): 192
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Complete list of divisors:
1 2 4 5 7 10 13 14 20 23 26 28 29 35 46 52 58 65 67 70 91 92 115 116 130 134 140 145 161 182 203 230 260 268 290 299 322 335 364 377 406 455 460 469 580 598 644 667 670 754 805 812 871 910 938 1015 1196 1334 1340 1495 1508 1541 1610 1742 1820 1876 1885 1943 2030 2093 2345 2639 2668 2990 3082 3220 3335 3484 3770 3886 4060 4186 4355 4669 4690 5278 5980 6097 6164 6670 7540 7705 7772 8372 8671 8710 9338 9380 9715 10465 10556 10787 12194 13195 13340 13601 15410 17342 17420 18676 19430 20033 20930 21574 23345 24388 25259 26390 27202 30485 30820 34684 38860 40066 41860 43148 43355 44689 46690 50518 52780 53935 54404 60697 60970 68005 80132 86710 89378 93380 100165 101036 107870 121394 121940 126295 136010 140231 173420 176813 178756 200330 215740 223445 242788 252590 272020 280462 303485 312823 353626 400660 446890 505180 560924 580957 606970 625646 701155 707252 884065 893780 1161914 1213940 1251292 1402310 1564115 1768130 2323828 2804620 2904785 3128230 3536260 4066699 5809570 6256460 8133398 11619140 16266796 20333495 40666990 81333980
- Sum of all divisors σ(n): 230307840
- Sum of proper divisors (its aliquot sum) s(n): 148973860
- 81333980 is an abundant number, because the sum of its proper divisors (148973860) is greater than itself. Its abundance is 67639880
Bases of 81333980
- Binary: 1001101100100001110110111002
- Hexadecimal: 0x4D90EDC
- Base-36: 1CF9P8
Squares and roots of 81333980
- 81333980 squared (813339802) is 6615216302640400
- 81333980 cubed (813339803) is 538041870454628240792000
-
The
square root of 81333980 is 9018.5353578061 -
The
cube root of 81333980 is 433.2687254105
Scales and comparisons
How big is 81333980?- 81,333,980 seconds is equal to 2 years, 30 weeks, 3 days, 8 hours, 46 minutes, 20 seconds.
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To count from 1 to 81,333,980 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 81333980 cubic inches would be around 36.1 feet tall.
Recreational maths with 81333980
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The information we have on file for 81333980 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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