81729413120
81,729,413,120 is an even composite number composed of four prime numbers multiplied together.
81729413120 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of one hundred sixty-eight divisors.
Prime factorization of 81729413120:
213 × 5 × 412 × 1187
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 5 × 41 × 41 × 1187)See below for interesting mathematical facts about the number 81729413120 from the Numbermatics database.
Names of 81729413120
- Cardinal: 81729413120 can be written as Eighty-one billion, seven hundred twenty-nine million, four hundred thirteen thousand, one hundred twenty.
Scientific notation
- Scientific notation: 8.172941312 × 1010
Factors of 81729413120
Divisors of 81729413120
- Number of divisors d(n): 168
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Complete list of divisors:
1 2 4 5 8 10 16 20 32 40 41 64 80 82 128 160 164 205 256 320 328 410 512 640 656 820 1024 1187 1280 1312 1640 1681 2048 2374 2560 2624 3280 3362 4096 4748 5120 5248 5935 6560 6724 8192 8405 9496 10240 10496 11870 13120 13448 16810 18992 20480 20992 23740 26240 26896 33620 37984 40960 41984 47480 48667 52480 53792 67240 75968 83968 94960 97334 104960 107584 134480 151936 167936 189920 194668 209920 215168 243335 268960 303872 335872 379840 389336 419840 430336 486670 537920 607744 759680 778672 839680 860672 973340 1075840 1215488 1519360 1557344 1679360 1721344 1946680 1995347 2151680 2430976 3038720 3114688 3442688 3893360 3990694 4303360 4861952 6077440 6229376 6885376 7786720 7981388 8606720 9723904 9976735 12154880 12458752 13770752 15573440 15962776 17213440 19953470 24309760 24917504 31146880 31925552 34426880 39906940 48619520 49835008 62293760 63851104 68853760 79813880 99670016 124587520 127702208 159627760 199340032 249175040 255404416 319255520 398680064 498350080 510808832 638511040 996700160 1021617664 1277022080 1993400320 2043235328 2554044160 4086470656 5108088320 8172941312 10216176640 16345882624 20432353280 40864706560 81729413120
- Sum of all divisors σ(n): 201208535352
- Sum of proper divisors (its aliquot sum) s(n): 119479122232
- 81729413120 is an abundant number, because the sum of its proper divisors (119479122232) is greater than itself. Its abundance is 37749709112
Bases of 81729413120
- Binary: 10011000001110111001111100000000000002
- Hexadecimal: 0x130773E000
- Base-36: 11JNKYRK
Squares and roots of 81729413120
- 81729413120 squared (817294131202) is 6679696968939628134400
- 81729413120 cubed (817294131203) is 545927713090878676135552483328000
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The
square root of 81729413120 is 285883.5656696621 -
The
cube root of 81729413120 is 4339.6975218697
Scales and comparisons
How big is 81729413120?- 81,729,413,120 seconds is equal to 2,598 years, 38 weeks, 4 days, 6 hours, 45 minutes, 20 seconds.
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To count from 1 to 81,729,413,120 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 81729413120 cubic inches would be around 361.6 feet tall.
Recreational maths with 81729413120
- 81729413120 backwards is 02131492718
- The number of decimal digits it has is: 11
- The sum of 81729413120's digits is 38
- More coming soon!
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