381428784
381,428,784 is an even composite number composed of four prime numbers multiplied together.
381428784 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of one hundred twenty divisors.
Prime factorization of 381428784:
24 × 33 × 112 × 7297
(2 × 2 × 2 × 2 × 3 × 3 × 3 × 11 × 11 × 7297)See below for interesting mathematical facts about the number 381428784 from the Numbermatics database.
Names of 381428784
- Cardinal: 381428784 can be written as Three hundred eighty-one million, four hundred twenty-eight thousand, seven hundred eighty-four.
Scientific notation
- Scientific notation: 3.81428784 × 108
Factors of 381428784
Divisors of 381428784
- Number of divisors d(n): 120
-
Complete list of divisors:
1 2 3 4 6 8 9 11 12 16 18 22 24 27 33 36 44 48 54 66 72 88 99 108 121 132 144 176 198 216 242 264 297 363 396 432 484 528 594 726 792 968 1089 1188 1452 1584 1936 2178 2376 2904 3267 4356 4752 5808 6534 7297 8712 13068 14594 17424 21891 26136 29188 43782 52272 58376 65673 80267 87564 116752 131346 160534 175128 197019 240801 262692 321068 350256 394038 481602 525384 642136 722403 788076 882937 963204 1050768 1284272 1444806 1576152 1765874 1926408 2167209 2648811 2889612 3152304 3531748 3852816 4334418 5297622 5779224 7063496 7946433 8668836 10595244 11558448 14126992 15892866 17337672 21190488 23839299 31785732 34675344 42380976 47678598 63571464 95357196 127142928 190714392 381428784
- Sum of all divisors σ(n): 1203586160
- Sum of proper divisors (its aliquot sum) s(n): 822157376
- 381428784 is an abundant number, because the sum of its proper divisors (822157376) is greater than itself. Its abundance is 440728592
Bases of 381428784
- Binary: 101101011110000100100001100002
- Hexadecimal: 0x16BC2430
- Base-36: 6B3CC0
Squares and roots of 381428784
- 381428784 squared (3814287842) is 145487917263718656
- 381428784 cubed (3814287843) is 55493279368592814276194304
-
The
square root of 381428784 is 19530.2018422749 -
The
cube root of 381428784 is 725.2223077283
Scales and comparisons
How big is 381428784?- 381,428,784 seconds is equal to 12 years, 6 weeks, 4 days, 16 hours, 26 minutes, 24 seconds.
-
To count from 1 to 381,428,784 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 381428784 cubic inches would be around 60.4 feet tall.
Recreational maths with 381428784
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