21439680
21,439,680 is an even composite number composed of five prime numbers multiplied together.
21439680 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of one hundred twelve divisors.
Prime factorization of 21439680:
26 × 3 × 5 × 23 × 971
(2 × 2 × 2 × 2 × 2 × 2 × 3 × 5 × 23 × 971)See below for interesting mathematical facts about the number 21439680 from the Numbermatics database.
Names of 21439680
- Cardinal: 21439680 can be written as Twenty-one million, four hundred thirty-nine thousand, six hundred eighty.
Scientific notation
- Scientific notation: 2.143968 × 107
Factors of 21439680
Divisors of 21439680
- Number of divisors d(n): 112
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Complete list of divisors:
1 2 3 4 5 6 8 10 12 15 16 20 23 24 30 32 40 46 48 60 64 69 80 92 96 115 120 138 160 184 192 230 240 276 320 345 368 460 480 552 690 736 920 960 971 1104 1380 1472 1840 1942 2208 2760 2913 3680 3884 4416 4855 5520 5826 7360 7768 9710 11040 11652 14565 15536 19420 22080 22333 23304 29130 31072 38840 44666 46608 58260 62144 66999 77680 89332 93216 111665 116520 133998 155360 178664 186432 223330 233040 267996 310720 334995 357328 446660 466080 535992 669990 714656 893320 932160 1071984 1339980 1429312 1786640 2143968 2679960 3573280 4287936 5359920 7146560 10719840 21439680
- Sum of all divisors σ(n): 71103744
- Sum of proper divisors (its aliquot sum) s(n): 49664064
- 21439680 is an abundant number, because the sum of its proper divisors (49664064) is greater than itself. Its abundance is 28224384
Bases of 21439680
- Binary: 10100011100100100110000002
- Hexadecimal: 0x14724C0
- Base-36: CRIYO
Squares and roots of 21439680
- 21439680 squared (214396802) is 459659878502400
- 21439680 cubed (214396803) is 9854960703930335232000
-
The
square root of 21439680 is 4630.3002062501 -
The
cube root of 21439680 is 277.8046001951
Scales and comparisons
How big is 21439680?- 21,439,680 seconds is equal to 35 weeks, 3 days, 3 hours, 28 minutes.
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To count from 1 to 21,439,680 would take you about five hours!
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 21439680 cubic inches would be around 23.2 feet tall.
Recreational maths with 21439680
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The information we have on file for 21439680 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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