21395140
21,395,140 is an even composite number composed of six prime numbers multiplied together.
21395140 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of ninety-six divisors.
Prime factorization of 21395140:
22 × 5 × 13 × 19 × 61 × 71
(2 × 2 × 5 × 13 × 19 × 61 × 71)See below for interesting mathematical facts about the number 21395140 from the Numbermatics database.
Names of 21395140
- Cardinal: 21395140 can be written as Twenty-one million, three hundred ninety-five thousand, one hundred forty.
Scientific notation
- Scientific notation: 2.139514 × 107
Factors of 21395140
Divisors of 21395140
- Number of divisors d(n): 96
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Complete list of divisors:
1 2 4 5 10 13 19 20 26 38 52 61 65 71 76 95 122 130 142 190 244 247 260 284 305 355 380 494 610 710 793 923 988 1159 1220 1235 1349 1420 1586 1846 2318 2470 2698 3172 3692 3965 4331 4615 4636 4940 5396 5795 6745 7930 8662 9230 11590 13490 15067 15860 17324 17537 18460 21655 23180 26980 30134 35074 43310 56303 60268 70148 75335 82289 86620 87685 112606 150670 164578 175370 225212 281515 301340 329156 350740 411445 563030 822890 1069757 1126060 1645780 2139514 4279028 5348785 10697570 21395140
- Sum of all divisors σ(n): 52496640
- Sum of proper divisors (its aliquot sum) s(n): 31101500
- 21395140 is an abundant number, because the sum of its proper divisors (31101500) is greater than itself. Its abundance is 9706360
Bases of 21395140
- Binary: 10100011001110110110001002
- Hexadecimal: 0x14676C4
- Base-36: CQKLG
Squares and roots of 21395140
- 21395140 squared (213951402) is 457752015619600
- 21395140 cubed (213951403) is 9793668459463528744000
-
The
square root of 21395140 is 4625.4880823541 -
The
cube root of 21395140 is 277.6120911775
Scales and comparisons
How big is 21395140?- 21,395,140 seconds is equal to 35 weeks, 2 days, 15 hours, 5 minutes, 40 seconds.
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To count from 1 to 21,395,140 would take you about ten 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 21395140 cubic inches would be around 23.1 feet tall.
Recreational maths with 21395140
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The information we have on file for 21395140 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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