18990400
18,990,400 is an even composite number composed of five prime numbers multiplied together.
18990400 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of one hundred sixty-eight divisors.
Prime factorization of 18990400:
26 × 52 × 11 × 13 × 83
(2 × 2 × 2 × 2 × 2 × 2 × 5 × 5 × 11 × 13 × 83)See below for interesting mathematical facts about the number 18990400 from the Numbermatics database.
Names of 18990400
- Cardinal: 18990400 can be written as Eighteen million, nine hundred ninety thousand, four hundred.
Scientific notation
- Scientific notation: 1.89904 × 107
Factors of 18990400
Divisors of 18990400
- Number of divisors d(n): 168
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Complete list of divisors:
1 2 4 5 8 10 11 13 16 20 22 25 26 32 40 44 50 52 55 64 65 80 83 88 100 104 110 130 143 160 166 176 200 208 220 260 275 286 320 325 332 352 400 415 416 440 520 550 572 650 664 704 715 800 830 832 880 913 1040 1079 1100 1144 1300 1328 1430 1600 1660 1760 1826 2075 2080 2158 2200 2288 2600 2656 2860 3320 3520 3575 3652 4150 4160 4316 4400 4565 4576 5200 5312 5395 5720 6640 7150 7304 8300 8632 8800 9130 9152 10400 10790 11440 11869 13280 14300 14608 16600 17264 17600 18260 20800 21580 22825 22880 23738 26560 26975 28600 29216 33200 34528 36520 43160 45650 45760 47476 53950 57200 58432 59345 66400 69056 73040 86320 91300 94952 107900 114400 118690 132800 146080 172640 182600 189904 215800 228800 237380 292160 296725 345280 365200 379808 431600 474760 593450 730400 759616 863200 949520 1186900 1460800 1726400 1899040 2373800 3798080 4747600 9495200 18990400
- Sum of all divisors σ(n): 55558944
- Sum of proper divisors (its aliquot sum) s(n): 36568544
- 18990400 is an abundant number, because the sum of its proper divisors (36568544) is greater than itself. Its abundance is 17578144
Bases of 18990400
- Binary: 10010000111000101010000002
- Hexadecimal: 0x121C540
- Base-36: BB134
Squares and roots of 18990400
- 18990400 squared (189904002) is 360635292160000
- 18990400 cubed (189904003) is 6848608452235264000000
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The
square root of 18990400 is 4357.7976088845 -
The
cube root of 18990400 is 266.7952157995
Scales and comparisons
How big is 18990400?- 18,990,400 seconds is equal to 31 weeks, 2 days, 19 hours, 6 minutes, 40 seconds.
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To count from 1 to 18,990,400 would take you about forty-seven weeks!
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 18990400 cubic inches would be around 22.2 feet tall.
Recreational maths with 18990400
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The information we have on file for 18990400 includes mathematical data and numerical statistics calculated using standard algorithms and methods. We are adding more all the time. If there are any features you would like to see, please contact us. Information provided for educational use, intellectual curiosity and fun!
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