81289104
81,289,104 is an even composite number composed of six prime numbers multiplied together.
81289104 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of one hundred sixty divisors.
Prime factorization of 81289104:
24 × 3 × 13 × 17 × 79 × 97
(2 × 2 × 2 × 2 × 3 × 13 × 17 × 79 × 97)See below for interesting mathematical facts about the number 81289104 from the Numbermatics database.
Names of 81289104
- Cardinal: 81289104 can be written as Eighty-one million, two hundred eighty-nine thousand, one hundred four.
Scientific notation
- Scientific notation: 8.1289104 × 107
Factors of 81289104
Divisors of 81289104
- Number of divisors d(n): 160
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Complete list of divisors:
1 2 3 4 6 8 12 13 16 17 24 26 34 39 48 51 52 68 78 79 97 102 104 136 156 158 194 204 208 221 237 272 291 312 316 388 408 442 474 582 624 632 663 776 816 884 948 1027 1164 1261 1264 1326 1343 1552 1649 1768 1896 2054 2328 2522 2652 2686 3081 3298 3536 3783 3792 4029 4108 4656 4947 5044 5304 5372 6162 6596 7566 7663 8058 8216 9894 10088 10608 10744 12324 13192 15132 15326 16116 16432 17459 19788 20176 21437 21488 22989 24648 26384 30264 30652 32232 34918 39576 42874 45978 49296 52377 60528 61304 64311 64464 69836 79152 85748 91956 99619 104754 122608 128622 130271 139672 171496 183912 199238 209508 257244 260542 279344 298857 342992 367824 390813 398476 419016 514488 521084 597714 781626 796952 838032 1028976 1042168 1195428 1563252 1593904 1693523 2084336 2390856 3126504 3387046 4781712 5080569 6253008 6774092 10161138 13548184 20322276 27096368 40644552 81289104
- Sum of all divisors σ(n): 244984320
- Sum of proper divisors (its aliquot sum) s(n): 163695216
- 81289104 is an abundant number, because the sum of its proper divisors (163695216) is greater than itself. Its abundance is 82406112
Bases of 81289104
- Binary: 1001101100001011111100100002
- Hexadecimal: 0x4D85F90
- Base-36: 1CEB2O
Squares and roots of 81289104
- 81289104 squared (812891042) is 6607918429122816
- 81289104 cubed (812891043) is 537151768408481218596864
-
The
square root of 81289104 is 9016.0470273841 -
The
cube root of 81289104 is 433.1890254525
Scales and comparisons
How big is 81289104?- 81,289,104 seconds is equal to 2 years, 30 weeks, 2 days, 20 hours, 18 minutes, 24 seconds.
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To count from 1 to 81,289,104 would take you about three 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 81289104 cubic inches would be around 36.1 feet tall.
Recreational maths with 81289104
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