12987720
12,987,720 is an even composite number composed of five prime numbers multiplied together.
12987720 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 12987720:
23 × 32 × 5 × 43 × 839
(2 × 2 × 2 × 3 × 3 × 5 × 43 × 839)See below for interesting mathematical facts about the number 12987720 from the Numbermatics database.
Names of 12987720
- Cardinal: 12987720 can be written as Twelve million, nine hundred eighty-seven thousand, seven hundred twenty.
Scientific notation
- Scientific notation: 1.298772 × 107
Factors of 12987720
Divisors of 12987720
- Number of divisors d(n): 96
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Complete list of divisors:
1 2 3 4 5 6 8 9 10 12 15 18 20 24 30 36 40 43 45 60 72 86 90 120 129 172 180 215 258 344 360 387 430 516 645 774 839 860 1032 1290 1548 1678 1720 1935 2517 2580 3096 3356 3870 4195 5034 5160 6712 7551 7740 8390 10068 12585 15102 15480 16780 20136 25170 30204 33560 36077 37755 50340 60408 72154 75510 100680 108231 144308 151020 180385 216462 288616 302040 324693 360770 432924 541155 649386 721540 865848 1082310 1298772 1443080 1623465 2164620 2597544 3246930 4329240 6493860 12987720
- Sum of all divisors σ(n): 43243200
- Sum of proper divisors (its aliquot sum) s(n): 30255480
- 12987720 is an abundant number, because the sum of its proper divisors (30255480) is greater than itself. Its abundance is 17267760
Bases of 12987720
- Binary: 1100011000101101010010002
- Hexadecimal: 0xC62D48
- Base-36: 7QDE0
Squares and roots of 12987720
- 12987720 squared (129877202) is 168680870798400
- 12987720 cubed (129877203) is 2190779919285795648000
-
The
square root of 12987720 is 3603.8479435181 -
The
cube root of 12987720 is 235.0594085503
Scales and comparisons
How big is 12987720?- 12,987,720 seconds is equal to 21 weeks, 3 days, 7 hours, 42 minutes.
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To count from 1 to 12,987,720 would take you about thirty-two weeks!
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 12987720 cubic inches would be around 19.6 feet tall.
Recreational maths with 12987720
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