21197385
21,197,385 is an odd composite number composed of five prime numbers multiplied together.
21197385 is an odd composite number. It is composed of five distinct prime numbers multiplied together. It has a total of seventy-two divisors.
Prime factorization of 21197385:
32 × 5 × 112 × 17 × 229
(3 × 3 × 5 × 11 × 11 × 17 × 229)See below for interesting mathematical facts about the number 21197385 from the Numbermatics database.
Names of 21197385
- Cardinal: 21197385 can be written as Twenty-one million, one hundred ninety-seven thousand, three hundred eighty-five.
Scientific notation
- Scientific notation: 2.1197385 × 107
Factors of 21197385
Divisors of 21197385
- Number of divisors d(n): 72
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Complete list of divisors:
1 3 5 9 11 15 17 33 45 51 55 85 99 121 153 165 187 229 255 363 495 561 605 687 765 935 1089 1145 1683 1815 2057 2061 2519 2805 3435 3893 5445 6171 7557 8415 10285 10305 11679 12595 18513 19465 22671 27709 30855 35037 37785 42823 58395 83127 92565 113355 128469 138545 175185 214115 249381 385407 415635 471053 642345 1246905 1413159 1927035 2355265 4239477 7065795 21197385
- Sum of all divisors σ(n): 42948360
- Sum of proper divisors (its aliquot sum) s(n): 21750975
- 21197385 is an abundant number, because the sum of its proper divisors (21750975) is greater than itself. Its abundance is 553590
Bases of 21197385
- Binary: 10100001101110010010010012
- Hexadecimal: 0x1437249
- Base-36: CMC09
Squares and roots of 21197385
- 21197385 squared (211973852) is 449329130838225
- 21197385 cubed (211973853) is 9524602578093228041625
-
The
square root of 21197385 is 4604.0617936777 -
The
cube root of 21197385 is 276.7541206731
Scales and comparisons
How big is 21197385?- 21,197,385 seconds is equal to 35 weeks, 8 hours, 9 minutes, 45 seconds.
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To count from 1 to 21,197,385 would take you about four 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 21197385 cubic inches would be around 23.1 feet tall.
Recreational maths with 21197385
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The information we have on file for 21197385 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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