81729245000
81,729,245,000 is an even composite number composed of four prime numbers multiplied together.
81729245000 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of one hundred eighty divisors.
Prime factorization of 81729245000:
23 × 54 × 132 × 3112
(2 × 2 × 2 × 5 × 5 × 5 × 5 × 13 × 13 × 311 × 311)See below for interesting mathematical facts about the number 81729245000 from the Numbermatics database.
Names of 81729245000
- Cardinal: 81729245000 can be written as Eighty-one billion, seven hundred twenty-nine million, two hundred forty-five thousand.
Scientific notation
- Scientific notation: 8.1729245 × 1010
Factors of 81729245000
Divisors of 81729245000
- Number of divisors d(n): 180
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Complete list of divisors:
1 2 4 5 8 10 13 20 25 26 40 50 52 65 100 104 125 130 169 200 250 260 311 325 338 500 520 622 625 650 676 845 1000 1244 1250 1300 1352 1555 1625 1690 2488 2500 2600 3110 3250 3380 4043 4225 5000 6220 6500 6760 7775 8086 8125 8450 12440 13000 15550 16172 16250 16900 20215 21125 31100 32344 32500 33800 38875 40430 42250 52559 62200 65000 77750 80860 84500 96721 101075 105118 105625 155500 161720 169000 193442 194375 202150 210236 211250 262795 311000 386884 388750 404300 420472 422500 483605 505375 525590 773768 777500 808600 845000 967210 1010750 1051180 1257373 1313975 1555000 1934420 2021500 2102360 2418025 2514746 2526875 2627950 3868840 4043000 4836050 5029492 5053750 5255900 6286865 6569875 9672100 10058984 10107500 10511800 12090125 12573730 13139750 16345849 19344200 20215000 24180250 25147460 26279500 31434325 32691698 32849375 48360500 50294920 52559000 60450625 62868650 65383396 65698750 81729245 96721000 120901250 125737300 130766792 131397500 157171625 163458490 241802500 251474600 262795000 314343250 326916980 408646225 483605000 628686500 653833960 785858125 817292450 1257373000 1571716250 1634584900 2043231125 3143432500 3269169800 4086462250 6286865000 8172924500 10216155625 16345849000 20432311250 40864622500 81729245000
- Sum of all divisors σ(n): 208023711885
- Sum of proper divisors (its aliquot sum) s(n): 126294466885
- 81729245000 is an abundant number, because the sum of its proper divisors (126294466885) is greater than itself. Its abundance is 44565221885
Bases of 81729245000
- Binary: 10011000001110111000101001111010010002
- Hexadecimal: 0x1307714F48
- Base-36: 11JNHD1K
Squares and roots of 81729245000
- 81729245000 squared (817292450002) is 6679669488270025000000
- 81729245000 cubed (817292450003) is 545924344125845499381125000000000
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The
square root of 81729245000 is 285883.2716337211 -
The
cube root of 81729245000 is 4339.6945462357
Scales and comparisons
How big is 81729245000?- 81,729,245,000 seconds is equal to 2,598 years, 38 weeks, 2 days, 8 hours, 3 minutes, 20 seconds.
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To count from 1 to 81,729,245,000 would take you about five thousand, one hundred ninety-seven 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 81729245000 cubic inches would be around 361.6 feet tall.
Recreational maths with 81729245000
- 81729245000 backwards is 00054292718
- The number of decimal digits it has is: 11
- The sum of 81729245000's digits is 38
- More coming soon!
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