129976720
129,976,720 is an even composite number composed of five prime numbers multiplied together.
129976720 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 129976720:
24 × 5 × 19 × 233 × 367
(2 × 2 × 2 × 2 × 5 × 19 × 233 × 367)See below for interesting mathematical facts about the number 129976720 from the Numbermatics database.
Names of 129976720
- Cardinal: 129976720 can be written as One hundred twenty-nine million, nine hundred seventy-six thousand, seven hundred twenty.
Scientific notation
- Scientific notation: 1.2997672 × 108
Factors of 129976720
Divisors of 129976720
- Number of divisors d(n): 80
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Complete list of divisors:
1 2 4 5 8 10 16 19 20 38 40 76 80 95 152 190 233 304 367 380 466 734 760 932 1165 1468 1520 1835 1864 2330 2936 3670 3728 4427 4660 5872 6973 7340 8854 9320 13946 14680 17708 18640 22135 27892 29360 34865 35416 44270 55784 69730 70832 85511 88540 111568 139460 171022 177080 278920 342044 354160 427555 557840 684088 855110 1368176 1624709 1710220 3249418 3420440 6498836 6840880 8123545 12997672 16247090 25995344 32494180 64988360 129976720
- Sum of all divisors σ(n): 320336640
- Sum of proper divisors (its aliquot sum) s(n): 190359920
- 129976720 is an abundant number, because the sum of its proper divisors (190359920) is greater than itself. Its abundance is 60383200
Bases of 129976720
- Binary: 1111011111101001001100100002
- Hexadecimal: 0x7BF4990
- Base-36: 25DUOG
Squares and roots of 129976720
- 129976720 squared (1299767202) is 16893947741958400
- 129976720 cubed (1299767203) is 2195819915351159208448000
-
The
square root of 129976720 is 11400.7333097481 -
The
cube root of 129976720 is 506.5494611937
Scales and comparisons
How big is 129976720?- 129,976,720 seconds is equal to 4 years, 6 weeks, 6 days, 8 hours, 38 minutes, 40 seconds.
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To count from 1 to 129,976,720 would take you about six 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 129976720 cubic inches would be around 42.2 feet tall.
Recreational maths with 129976720
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