389986290
389,986,290 is an even composite number composed of six prime numbers multiplied together.
389986290 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of one hundred forty-four divisors.
Prime factorization of 389986290:
2 × 32 × 5 × 17 × 37 × 832
(2 × 3 × 3 × 5 × 17 × 37 × 83 × 83)See below for interesting mathematical facts about the number 389986290 from the Numbermatics database.
Names of 389986290
- Cardinal: 389986290 can be written as Three hundred eighty-nine million, nine hundred eighty-six thousand, two hundred ninety.
Scientific notation
- Scientific notation: 3.8998629 × 108
Factors of 389986290
Divisors of 389986290
- Number of divisors d(n): 144
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Complete list of divisors:
1 2 3 5 6 9 10 15 17 18 30 34 37 45 51 74 83 85 90 102 111 153 166 170 185 222 249 255 306 333 370 415 498 510 555 629 666 747 765 830 1110 1245 1258 1411 1494 1530 1665 1887 2490 2822 3071 3145 3330 3735 3774 4233 5661 6142 6290 6889 7055 7470 8466 9213 9435 11322 12699 13778 14110 15355 18426 18870 20667 21165 25398 27639 28305 30710 34445 41334 42330 46065 52207 55278 56610 62001 63495 68890 92130 103335 104414 117113 124002 126990 138195 156621 206670 234226 254893 261035 276390 310005 313242 351339 469863 509786 522070 585565 620010 702678 764679 783105 939726 1054017 1171130 1274465 1529358 1566210 1756695 2108034 2294037 2349315 2548930 3513390 3823395 4333181 4588074 4698630 5270085 7646790 8666362 10540170 11470185 12999543 21665905 22940370 25999086 38998629 43331810 64997715 77997258 129995430 194993145 389986290
- Sum of all divisors σ(n): 1116070488
- Sum of proper divisors (its aliquot sum) s(n): 726084198
- 389986290 is an abundant number, because the sum of its proper divisors (726084198) is greater than itself. Its abundance is 336097908
Bases of 389986290
- Binary: 101110011111010110111111100102
- Hexadecimal: 0x173EB7F2
- Base-36: 6G6RCI
Squares and roots of 389986290
- 389986290 squared (3899862902) is 152089306387964100
- 389986290 cubed (3899862903) is 59312744346915420012189000
-
The
square root of 389986290 is 19748.0705386627 -
The
cube root of 389986290 is 730.6057960043
Scales and comparisons
How big is 389986290?- 389,986,290 seconds is equal to 12 years, 20 weeks, 5 days, 17 hours, 31 minutes, 30 seconds.
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To count from 1 to 389,986,290 would take you about eighteen 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 389986290 cubic inches would be around 60.9 feet tall.
Recreational maths with 389986290
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