21318390
21,318,390 is an even composite number composed of five prime numbers multiplied together.
What does the number 21318390 look like?
This visualization shows the relationship between its 5 prime factors (large circles) and 96 divisors.
21318390 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of ninety-six divisors.
Prime factorization of 21318390:
2 × 35 × 5 × 31 × 283
(2 × 3 × 3 × 3 × 3 × 3 × 5 × 31 × 283)See below for interesting mathematical facts about the number 21318390 from the Numbermatics database.
Names of 21318390
- Cardinal: 21318390 can be written as Twenty-one million, three hundred eighteen thousand, three hundred ninety.
Scientific notation
- Scientific notation: 2.131839 × 107
Factors of 21318390
Divisors of 21318390
- Number of divisors d(n): 96
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Complete list of divisors:
1 2 3 5 6 9 10 15 18 27 30 31 45 54 62 81 90 93 135 155 162 186 243 270 279 283 310 405 465 486 558 566 810 837 849 930 1215 1395 1415 1674 1698 2430 2511 2547 2790 2830 4185 4245 5022 5094 7533 7641 8370 8490 8773 12555 12735 15066 15282 17546 22923 25110 25470 26319 37665 38205 43865 45846 52638 68769 75330 76410 78957 87730 114615 131595 137538 157914 229230 236871 263190 343845 394785 473742 687690 710613 789570 1184355 1421226 2131839 2368710 3553065 4263678 7106130 10659195 21318390
- Sum of all divisors σ(n): 59544576
- Sum of proper divisors (its aliquot sum) s(n): 38226186
- 21318390 is an abundant number, because the sum of its proper divisors (38226186) is greater than itself. Its abundance is 16907796
Bases of 21318390
- Binary: 10100010101001010111101102
- Hexadecimal: 0x1454AF6
- Base-36: COXDI
Squares and roots of 21318390
- 21318390 squared (213183902) is 454473752192100
- 21318390 cubed (213183903) is 9688648693994542719000
-
The
square root of 21318390 is 4617.1842068517 -
The
cube root of 21318390 is 277.2797375603
Scales and comparisons
How big is 21318390?- 21,318,390 seconds is equal to 35 weeks, 1 day, 17 hours, 46 minutes, 30 seconds.
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To count from 1 to 21,318,390 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 21318390 cubic inches would be around 23.1 feet tall.
Recreational maths with 21318390
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The information we have on file for 21318390 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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