21089970
21,089,970 is an even composite number composed of five prime numbers multiplied together.
21089970 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 21089970:
2 × 36 × 5 × 11 × 263
(2 × 3 × 3 × 3 × 3 × 3 × 3 × 5 × 11 × 263)See below for interesting mathematical facts about the number 21089970 from the Numbermatics database.
Names of 21089970
- Cardinal: 21089970 can be written as Twenty-one million, eighty-nine thousand, nine hundred seventy.
Scientific notation
- Scientific notation: 2.108997 × 107
Factors of 21089970
Divisors of 21089970
- Number of divisors d(n): 112
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Complete list of divisors:
1 2 3 5 6 9 10 11 15 18 22 27 30 33 45 54 55 66 81 90 99 110 135 162 165 198 243 263 270 297 330 405 486 495 526 594 729 789 810 891 990 1215 1315 1458 1485 1578 1782 2367 2430 2630 2673 2893 2970 3645 3945 4455 4734 5346 5786 7101 7290 7890 8019 8679 8910 11835 13365 14202 14465 16038 17358 21303 23670 26037 26730 28930 35505 40095 42606 43395 52074 63909 71010 78111 80190 86790 106515 127818 130185 156222 191727 213030 234333 260370 319545 383454 390555 468666 639090 702999 781110 958635 1171665 1405998 1917270 2108997 2343330 3514995 4217994 7029990 10544985 21089970
- Sum of all divisors σ(n): 62327232
- Sum of proper divisors (its aliquot sum) s(n): 41237262
- 21089970 is an abundant number, because the sum of its proper divisors (41237262) is greater than itself. Its abundance is 20147292
Bases of 21089970
- Binary: 10100000111001110101100102
- Hexadecimal: 0x141CEB2
- Base-36: CK14I
Squares and roots of 21089970
- 21089970 squared (210899702) is 444786834600900
- 21089970 cubed (210899703) is 9380540998127942973000
-
The
square root of 21089970 is 4592.3817350041 -
The
cube root of 21089970 is 276.2858569509
Scales and comparisons
How big is 21089970?- 21,089,970 seconds is equal to 34 weeks, 6 days, 2 hours, 19 minutes, 30 seconds.
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To count from 1 to 21,089,970 would take you about two 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 21089970 cubic inches would be around 23 feet tall.
Recreational maths with 21089970
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