20989440
20,989,440 is an even composite number composed of four prime numbers multiplied together.
20989440 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of one hundred twenty divisors.
Prime factorization of 20989440:
29 × 32 × 5 × 911
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 3 × 3 × 5 × 911)See below for interesting mathematical facts about the number 20989440 from the Numbermatics database.
Names of 20989440
- Cardinal: 20989440 can be written as Twenty million, nine hundred eighty-nine thousand, four hundred forty.
Scientific notation
- Scientific notation: 2.098944 × 107
Factors of 20989440
Divisors of 20989440
- Number of divisors d(n): 120
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Complete list of divisors:
1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 30 32 36 40 45 48 60 64 72 80 90 96 120 128 144 160 180 192 240 256 288 320 360 384 480 512 576 640 720 768 911 960 1152 1280 1440 1536 1822 1920 2304 2560 2733 2880 3644 3840 4555 4608 5466 5760 7288 7680 8199 9110 10932 11520 13665 14576 16398 18220 21864 23040 27330 29152 32796 36440 40995 43728 54660 58304 65592 72880 81990 87456 109320 116608 131184 145760 163980 174912 218640 233216 262368 291520 327960 349824 437280 466432 524736 583040 655920 699648 874560 1049472 1166080 1311840 1399296 1749120 2098944 2332160 2623680 3498240 4197888 5247360 6996480 10494720 20989440
- Sum of all divisors σ(n): 72772128
- Sum of proper divisors (its aliquot sum) s(n): 51782688
- 20989440 is an abundant number, because the sum of its proper divisors (51782688) is greater than itself. Its abundance is 30793248
Bases of 20989440
- Binary: 10100000001000110000000002
- Hexadecimal: 0x1404600
- Base-36: CHVK0
Squares and roots of 20989440
- 20989440 squared (209894402) is 440556591513600
- 20989440 cubed (209894403) is 9247036144179216384000
-
The
square root of 20989440 is 4581.4233596121 -
The
cube root of 20989440 is 275.8461650601
Scales and comparisons
How big is 20989440?- 20,989,440 seconds is equal to 34 weeks, 4 days, 22 hours, 24 minutes.
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To count from 1 to 20,989,440 would take you about nine 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 20989440 cubic inches would be around 23 feet tall.
Recreational maths with 20989440
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The information we have on file for 20989440 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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