21728000
21,728,000 is an even composite number composed of four prime numbers multiplied together.
21728000 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of one hundred forty-four divisors.
Prime factorization of 21728000:
28 × 53 × 7 × 97
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 5 × 5 × 5 × 7 × 97)See below for interesting mathematical facts about the number 21728000 from the Numbermatics database.
Names of 21728000
- Cardinal: 21728000 can be written as Twenty-one million, seven hundred twenty-eight thousand.
Scientific notation
- Scientific notation: 2.1728 × 107
Factors of 21728000
Divisors of 21728000
- Number of divisors d(n): 144
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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 97 100 112 125 128 140 160 175 194 200 224 250 256 280 320 350 388 400 448 485 500 560 640 679 700 776 800 875 896 970 1000 1120 1280 1358 1400 1552 1600 1750 1792 1940 2000 2240 2425 2716 2800 3104 3200 3395 3500 3880 4000 4480 4850 5432 5600 6208 6400 6790 7000 7760 8000 8960 9700 10864 11200 12125 12416 13580 14000 15520 16000 16975 19400 21728 22400 24250 24832 27160 28000 31040 32000 33950 38800 43456 44800 48500 54320 56000 62080 67900 77600 84875 86912 97000 108640 112000 124160 135800 155200 169750 173824 194000 217280 224000 271600 310400 339500 388000 434560 543200 620800 679000 776000 869120 1086400 1358000 1552000 2172800 2716000 3104000 4345600 5432000 10864000 21728000
- Sum of all divisors σ(n): 62497344
- Sum of proper divisors (its aliquot sum) s(n): 40769344
- 21728000 is an abundant number, because the sum of its proper divisors (40769344) is greater than itself. Its abundance is 19041344
Bases of 21728000
- Binary: 10100101110001011000000002
- Hexadecimal: 0x14B8B00
- Base-36: CXPFK
Squares and roots of 21728000
- 21728000 squared (217280002) is 472105984000000
- 21728000 cubed (217280003) is 10257918820352000000000
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The
square root of 21728000 is 4661.3302822265 -
The
cube root of 21728000 is 279.0443611669
Scales and comparisons
How big is 21728000?- 21,728,000 seconds is equal to 35 weeks, 6 days, 11 hours, 33 minutes, 20 seconds.
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To count from 1 to 21,728,000 would take you about six days!
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 21728000 cubic inches would be around 23.3 feet tall.
Recreational maths with 21728000
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The information we have on file for 21728000 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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