81329976
81,329,976 is an even composite number composed of five prime numbers multiplied together.
81329976 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of ninety-six divisors.
Prime factorization of 81329976:
23 × 32 × 7 × 13 × 12413
(2 × 2 × 2 × 3 × 3 × 7 × 13 × 12413)See below for interesting mathematical facts about the number 81329976 from the Numbermatics database.
Names of 81329976
- Cardinal: 81329976 can be written as Eighty-one million, three hundred twenty-nine thousand, nine hundred seventy-six.
Scientific notation
- Scientific notation: 8.1329976 × 107
Factors of 81329976
Divisors of 81329976
- Number of divisors d(n): 96
-
Complete list of divisors:
1 2 3 4 6 7 8 9 12 13 14 18 21 24 26 28 36 39 42 52 56 63 72 78 84 91 104 117 126 156 168 182 234 252 273 312 364 468 504 546 728 819 936 1092 1638 2184 3276 6552 12413 24826 37239 49652 74478 86891 99304 111717 148956 161369 173782 223434 260673 297912 322738 347564 446868 484107 521346 645476 695128 782019 893736 968214 1042692 1129583 1290952 1452321 1564038 1936428 2085384 2259166 2904642 3128076 3388749 3872856 4518332 5809284 6256152 6777498 9036664 10166247 11618568 13554996 20332494 27109992 40664988 81329976
- Sum of all divisors σ(n): 271121760
- Sum of proper divisors (its aliquot sum) s(n): 189791784
- 81329976 is an abundant number, because the sum of its proper divisors (189791784) is greater than itself. Its abundance is 108461808
Bases of 81329976
- Binary: 1001101100011111111001110002
- Hexadecimal: 0x4D8FF38
- Base-36: 1CF6M0
Squares and roots of 81329976
- 81329976 squared (813299762) is 6614564996160576
- 81329976 cubed (813299763) is 537962412388179738226176
-
The
square root of 81329976 is 9018.3133678089 -
The
cube root of 81329976 is 433.2616154815
Scales and comparisons
How big is 81329976?- 81,329,976 seconds is equal to 2 years, 30 weeks, 3 days, 7 hours, 39 minutes, 36 seconds.
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To count from 1 to 81,329,976 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 81329976 cubic inches would be around 36.1 feet tall.
Recreational maths with 81329976
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