66042720
66,042,720 is an even composite number composed of four prime numbers multiplied together.
66042720 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of seventy-two divisors.
Prime factorization of 66042720:
25 × 32 × 5 × 45863
(2 × 2 × 2 × 2 × 2 × 3 × 3 × 5 × 45863)See below for interesting mathematical facts about the number 66042720 from the Numbermatics database.
Names of 66042720
- Cardinal: 66042720 can be written as Sixty-six million, forty-two thousand, seven hundred twenty.
Scientific notation
- Scientific notation: 6.604272 × 107
Factors of 66042720
Divisors of 66042720
- Number of divisors d(n): 72
-
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 72 80 90 96 120 144 160 180 240 288 360 480 720 1440 45863 91726 137589 183452 229315 275178 366904 412767 458630 550356 687945 733808 825534 917260 1100712 1375890 1467616 1651068 1834520 2063835 2201424 2751780 3302136 3669040 4127670 4402848 5503560 6604272 7338080 8255340 11007120 13208544 16510680 22014240 33021360 66042720
- Sum of all divisors σ(n): 225375696
- Sum of proper divisors (its aliquot sum) s(n): 159332976
- 66042720 is an abundant number, because the sum of its proper divisors (159332976) is greater than itself. Its abundance is 93290256
Bases of 66042720
- Binary: 111110111110111011011000002
- Hexadecimal: 0x3EFBB60
- Base-36: 13BIW0
Squares and roots of 66042720
- 66042720 squared (660427202) is 4361640864998400
- 66042720 cubed (660427203) is 288054626387647131648000
-
The
square root of 66042720 is 8126.6672135631 -
The
cube root of 66042720 is 404.2111760715
Scales and comparisons
How big is 66042720?- 66,042,720 seconds is equal to 2 years, 5 weeks, 1 day, 9 hours, 12 minutes.
-
To count from 1 to 66,042,720 would take you about three years!
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 66042720 cubic inches would be around 33.7 feet tall.
Recreational maths with 66042720
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