12872720
12,872,720 is an even composite number composed of five prime numbers multiplied together.
12872720 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of eighty divisors.
Prime factorization of 12872720:
24 × 5 × 7 × 127 × 181
(2 × 2 × 2 × 2 × 5 × 7 × 127 × 181)See below for interesting mathematical facts about the number 12872720 from the Numbermatics database.
Names of 12872720
- Cardinal: 12872720 can be written as Twelve million, eight hundred seventy-two thousand, seven hundred twenty.
Scientific notation
- Scientific notation: 1.287272 × 107
Factors of 12872720
Divisors of 12872720
- Number of divisors d(n): 80
-
Complete list of divisors:
1 2 4 5 7 8 10 14 16 20 28 35 40 56 70 80 112 127 140 181 254 280 362 508 560 635 724 889 905 1016 1267 1270 1448 1778 1810 2032 2534 2540 2896 3556 3620 4445 5068 5080 6335 7112 7240 8890 10136 10160 12670 14224 14480 17780 20272 22987 25340 35560 45974 50680 71120 91948 101360 114935 160909 183896 229870 321818 367792 459740 643636 804545 919480 1287272 1609090 1838960 2574544 3218180 6436360 12872720
- Sum of all divisors σ(n): 34664448
- Sum of proper divisors (its aliquot sum) s(n): 21791728
- 12872720 is an abundant number, because the sum of its proper divisors (21791728) is greater than itself. Its abundance is 8919008
Bases of 12872720
- Binary: 1100010001101100000100002
- Hexadecimal: 0xC46C10
- Base-36: 7NWNK
Squares and roots of 12872720
- 12872720 squared (128727202) is 165706920198400
- 12872720 cubed (128727203) is 2133098785776347648000
-
The
square root of 12872720 is 3587.8572992805 -
The
cube root of 12872720 is 234.3635714723
Scales and comparisons
How big is 12872720?- 12,872,720 seconds is equal to 21 weeks, 1 day, 23 hours, 45 minutes, 20 seconds.
-
To count from 1 to 12,872,720 would take you about thirty-one 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 12872720 cubic inches would be around 19.5 feet tall.
Recreational maths with 12872720
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