81020800
81,020,800 is an even composite number composed of four prime numbers multiplied together.
81020800 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of ninety-six divisors.
Prime factorization of 81020800:
27 × 52 × 7 × 3617
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 5 × 5 × 7 × 3617)See below for interesting mathematical facts about the number 81020800 from the Numbermatics database.
Names of 81020800
- Cardinal: 81020800 can be written as Eighty-one million, twenty thousand, eight hundred.
Scientific notation
- Scientific notation: 8.10208 × 107
Factors of 81020800
Divisors of 81020800
- Number of divisors d(n): 96
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Complete list of divisors:
1 2 4 5 7 8 10 14 16 20 25 28 32 35 40 50 56 64 70 80 100 112 128 140 160 175 200 224 280 320 350 400 448 560 640 700 800 896 1120 1400 1600 2240 2800 3200 3617 4480 5600 7234 11200 14468 18085 22400 25319 28936 36170 50638 57872 72340 90425 101276 115744 126595 144680 180850 202552 231488 253190 289360 361700 405104 462976 506380 578720 632975 723400 810208 1012760 1157440 1265950 1446800 1620416 2025520 2314880 2531900 2893600 3240832 4051040 5063800 5787200 8102080 10127600 11574400 16204160 20255200 40510400 81020800
- Sum of all divisors σ(n): 228802320
- Sum of proper divisors (its aliquot sum) s(n): 147781520
- 81020800 is an abundant number, because the sum of its proper divisors (147781520) is greater than itself. Its abundance is 66760720
Bases of 81020800
- Binary: 1001101010001000111100000002
- Hexadecimal: 0x4D44780
- Base-36: 1C8K1S
Squares and roots of 81020800
- 81020800 squared (810208002) is 6564370032640000
- 81020800 cubed (810208003) is 531850511540518912000000
-
The
square root of 81020800 is 9001.1554813813 -
The
cube root of 81020800 is 432.7119034671
Scales and comparisons
How big is 81020800?- 81,020,800 seconds is equal to 2 years, 29 weeks, 6 days, 17 hours, 46 minutes, 40 seconds.
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To count from 1 to 81,020,800 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 81020800 cubic inches would be around 36.1 feet tall.
Recreational maths with 81020800
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The information we have on file for 81020800 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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