129438720
129,438,720 is an even composite number composed of four prime numbers multiplied together.
129438720 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of one hundred ninety-eight divisors.
Prime factorization of 129438720:
210 × 32 × 5 × 532
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 3 × 3 × 5 × 53 × 53)See below for interesting mathematical facts about the number 129438720 from the Numbermatics database.
Names of 129438720
- Cardinal: 129438720 can be written as One hundred twenty-nine million, four hundred thirty-eight thousand, seven hundred twenty.
Scientific notation
- Scientific notation: 1.2943872 × 108
Factors of 129438720
Divisors of 129438720
- Number of divisors d(n): 198
-
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 53 60 64 72 80 90 96 106 120 128 144 159 160 180 192 212 240 256 265 288 318 320 360 384 424 477 480 512 530 576 636 640 720 768 795 848 954 960 1024 1060 1152 1272 1280 1440 1536 1590 1696 1908 1920 2120 2304 2385 2544 2560 2809 2880 3072 3180 3392 3816 3840 4240 4608 4770 5088 5120 5618 5760 6360 6784 7632 7680 8427 8480 9216 9540 10176 11236 11520 12720 13568 14045 15264 15360 16854 16960 19080 20352 22472 23040 25281 25440 27136 28090 30528 33708 33920 38160 40704 42135 44944 46080 50562 50880 54272 56180 61056 67416 67840 76320 81408 84270 89888 101124 101760 112360 122112 126405 134832 135680 152640 162816 168540 179776 202248 203520 224720 244224 252810 269664 271360 305280 337080 359552 404496 407040 449440 488448 505620 539328 610560 674160 719104 808992 814080 898880 1011240 1078656 1221120 1348320 1438208 1617984 1797760 2022480 2157312 2442240 2696640 2876416 3235968 3595520 4044960 4314624 5393280 6471936 7191040 8089920 8629248 10786560 12943872 14382080 16179840 21573120 25887744 32359680 43146240 64719360 129438720
- Sum of all divisors σ(n): 457123758
- Sum of proper divisors (its aliquot sum) s(n): 327685038
- 129438720 is an abundant number, because the sum of its proper divisors (327685038) is greater than itself. Its abundance is 198246318
Bases of 129438720
- Binary: 1111011011100010100000000002
- Hexadecimal: 0x7B71400
- Base-36: 252BK0
Squares and roots of 129438720
- 129438720 squared (1294387202) is 16754382235238400
- 129438720 cubed (1294387203) is 2168665790919997390848000
-
The
square root of 129438720 is 11377.1138695189 -
The
cube root of 129438720 is 505.8495910235
Scales and comparisons
How big is 129438720?- 129,438,720 seconds is equal to 4 years, 6 weeks, 3 hours, 12 minutes.
-
To count from 1 to 129,438,720 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 129438720 cubic inches would be around 42.2 feet tall.
Recreational maths with 129438720
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The information we have on file for 129438720 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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