129720816
129,720,816 is an even composite number composed of five prime numbers multiplied together.
129720816 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of one hundred twenty divisors.
Prime factorization of 129720816:
24 × 32 × 37 × 97 × 251
(2 × 2 × 2 × 2 × 3 × 3 × 37 × 97 × 251)See below for interesting mathematical facts about the number 129720816 from the Numbermatics database.
Names of 129720816
- Cardinal: 129720816 can be written as One hundred twenty-nine million, seven hundred twenty thousand, eight hundred sixteen.
Scientific notation
- Scientific notation: 1.29720816 × 108
Factors of 129720816
Divisors of 129720816
- Number of divisors d(n): 120
-
Complete list of divisors:
1 2 3 4 6 8 9 12 16 18 24 36 37 48 72 74 97 111 144 148 194 222 251 291 296 333 388 444 502 582 592 666 753 776 873 888 1004 1164 1332 1506 1552 1746 1776 2008 2259 2328 2664 3012 3492 3589 4016 4518 4656 5328 6024 6984 7178 9036 9287 10767 12048 13968 14356 18072 18574 21534 24347 27861 28712 32301 36144 37148 43068 48694 55722 57424 64602 73041 74296 83583 86136 97388 111444 129204 146082 148592 167166 172272 194776 219123 222888 258408 292164 334332 389552 438246 445776 516816 584328 668664 876492 900839 1168656 1337328 1752984 1801678 2702517 3505968 3603356 5405034 7206712 8107551 10810068 14413424 16215102 21620136 32430204 43240272 64860408 129720816
- Sum of all divisors σ(n): 378194544
- Sum of proper divisors (its aliquot sum) s(n): 248473728
- 129720816 is an abundant number, because the sum of its proper divisors (248473728) is greater than itself. Its abundance is 118752912
Bases of 129720816
- Binary: 1111011101101100001111100002
- Hexadecimal: 0x7BB61F0
- Base-36: 258D80
Squares and roots of 129720816
- 129720816 squared (1297208162) is 16827490103705856
- 129720816 cubed (1297208163) is 2182875747484648264298496
-
The
square root of 129720816 is 11389.5046424327 -
The
cube root of 129720816 is 506.2168036761
Scales and comparisons
How big is 129720816?- 129,720,816 seconds is equal to 4 years, 6 weeks, 3 days, 9 hours, 33 minutes, 36 seconds.
-
To count from 1 to 129,720,816 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 129720816 cubic inches would be around 42.2 feet tall.
Recreational maths with 129720816
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The information we have on file for 129720816 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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