129521664
129,521,664 is an even composite number composed of three prime numbers multiplied together.
129521664 is an even composite number. It is composed of three distinct prime numbers multiplied together. It has a total of seventy-two divisors.
Prime factorization of 129521664:
211 × 32 × 7027
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 3 × 3 × 7027)See below for interesting mathematical facts about the number 129521664 from the Numbermatics database.
Names of 129521664
- Cardinal: 129521664 can be written as One hundred twenty-nine million, five hundred twenty-one thousand, six hundred sixty-four.
Scientific notation
- Scientific notation: 1.29521664 × 108
Factors of 129521664
Divisors of 129521664
- Number of divisors d(n): 72
-
Complete list of divisors:
1 2 3 4 6 8 9 12 16 18 24 32 36 48 64 72 96 128 144 192 256 288 384 512 576 768 1024 1152 1536 2048 2304 3072 4608 6144 7027 9216 14054 18432 21081 28108 42162 56216 63243 84324 112432 126486 168648 224864 252972 337296 449728 505944 674592 899456 1011888 1349184 1798912 2023776 2698368 3597824 4047552 5396736 7195648 8095104 10793472 14391296 16190208 21586944 32380416 43173888 64760832 129521664
- Sum of all divisors σ(n): 374135580
- Sum of proper divisors (its aliquot sum) s(n): 244613916
- 129521664 is an abundant number, because the sum of its proper divisors (244613916) is greater than itself. Its abundance is 115092252
Bases of 129521664
- Binary: 1111011100001011000000000002
- Hexadecimal: 0x7B85800
- Base-36: 2543K0
Squares and roots of 129521664
- 129521664 squared (1295216642) is 16775861445328896
- 129521664 cubed (1295216643) is 2172837489432443637202944
-
The
square root of 129521664 is 11380.7584984481 -
The
cube root of 129521664 is 505.9576169931
Scales and comparisons
How big is 129521664?- 129,521,664 seconds is equal to 4 years, 6 weeks, 1 day, 2 hours, 14 minutes, 24 seconds.
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To count from 1 to 129,521,664 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 129521664 cubic inches would be around 42.2 feet tall.
Recreational maths with 129521664
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