81324100
81,324,100 is an even composite number composed of five prime numbers multiplied together.
81324100 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of one hundred forty-four divisors.
Prime factorization of 81324100:
22 × 52 × 113 × 13 × 47
(2 × 2 × 5 × 5 × 11 × 11 × 11 × 13 × 47)See below for interesting mathematical facts about the number 81324100 from the Numbermatics database.
Names of 81324100
- Cardinal: 81324100 can be written as Eighty-one million, three hundred twenty-four thousand, one hundred.
Scientific notation
- Scientific notation: 8.13241 × 107
Factors of 81324100
Divisors of 81324100
- Number of divisors d(n): 144
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Complete list of divisors:
1 2 4 5 10 11 13 20 22 25 26 44 47 50 52 55 65 94 100 110 121 130 143 188 220 235 242 260 275 286 325 470 484 517 550 572 605 611 650 715 940 1034 1100 1175 1210 1222 1300 1331 1430 1573 2068 2350 2420 2444 2585 2662 2860 3025 3055 3146 3575 4700 5170 5324 5687 6050 6110 6292 6655 6721 7150 7865 10340 11374 12100 12220 12925 13310 13442 14300 15275 15730 17303 22748 25850 26620 26884 28435 30550 31460 33275 33605 34606 39325 51700 56870 61100 62557 66550 67210 69212 73931 78650 86515 113740 125114 133100 134420 142175 147862 157300 168025 173030 250228 284350 295724 312785 336050 346060 369655 432575 568700 625570 672100 739310 813241 865150 1251140 1478620 1563925 1626482 1730300 1848275 3127850 3252964 3696550 4066205 6255700 7393100 8132410 16264820 20331025 40662050 81324100
- Sum of all divisors σ(n): 213486336
- Sum of proper divisors (its aliquot sum) s(n): 132162236
- 81324100 is an abundant number, because the sum of its proper divisors (132162236) is greater than itself. Its abundance is 50838136
Bases of 81324100
- Binary: 1001101100011101000010001002
- Hexadecimal: 0x4D8E844
- Base-36: 1CF22S
Squares and roots of 81324100
- 81324100 squared (813241002) is 6613609240810000
- 81324100 cubed (813241003) is 537845819260556521000000
-
The
square root of 81324100 is 9017.9875803863 -
The
cube root of 81324100 is 433.2511810075
Scales and comparisons
How big is 81324100?- 81,324,100 seconds is equal to 2 years, 30 weeks, 3 days, 6 hours, 1 minute, 40 seconds.
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To count from 1 to 81,324,100 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 81324100 cubic inches would be around 36.1 feet tall.
Recreational maths with 81324100
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