129505728
129,505,728 is an even composite number composed of five prime numbers multiplied together.
What does the number 129505728 look like?
This visualization shows the relationship between its 5 prime factors (large circles) and 112 divisors.
129505728 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of one hundred twelve divisors.
Prime factorization of 129505728:
26 × 3 × 11 × 17 × 3607
(2 × 2 × 2 × 2 × 2 × 2 × 3 × 11 × 17 × 3607)See below for interesting mathematical facts about the number 129505728 from the Numbermatics database.
Names of 129505728
- Cardinal: 129505728 can be written as One hundred twenty-nine million, five hundred five thousand, seven hundred twenty-eight.
Scientific notation
- Scientific notation: 1.29505728 × 108
Factors of 129505728
Divisors of 129505728
- Number of divisors d(n): 112
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Complete list of divisors:
1 2 3 4 6 8 11 12 16 17 22 24 32 33 34 44 48 51 64 66 68 88 96 102 132 136 176 187 192 204 264 272 352 374 408 528 544 561 704 748 816 1056 1088 1122 1496 1632 2112 2244 2992 3264 3607 4488 5984 7214 8976 10821 11968 14428 17952 21642 28856 35904 39677 43284 57712 61319 79354 86568 115424 119031 122638 158708 173136 183957 230848 238062 245276 317416 346272 367914 476124 490552 634832 674509 692544 735828 952248 981104 1269664 1349018 1471656 1904496 1962208 2023527 2539328 2698036 2943312 3808992 3924416 4047054 5396072 5886624 7617984 8094108 10792144 11773248 16188216 21584288 32376432 43168576 64752864 129505728
- Sum of all divisors σ(n): 395898624
- Sum of proper divisors (its aliquot sum) s(n): 266392896
- 129505728 is an abundant number, because the sum of its proper divisors (266392896) is greater than itself. Its abundance is 136887168
Bases of 129505728
- Binary: 1111011100000011001110000002
- Hexadecimal: 0x7B819C0
- Base-36: 253R9C
Squares and roots of 129505728
- 129505728 squared (1295057282) is 16771733584809984
- 129505728 cubed (1295057283) is 2172035567722866719588352
-
The
square root of 129505728 is 11380.0583478293 -
The
cube root of 129505728 is 505.9368655835
Scales and comparisons
How big is 129505728?- 129,505,728 seconds is equal to 4 years, 6 weeks, 21 hours, 48 minutes, 48 seconds.
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To count from 1 to 129,505,728 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 129505728 cubic inches would be around 42.2 feet tall.
Recreational maths with 129505728
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The information we have on file for 129505728 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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