642392128
642,392,128 is an even composite number composed of five prime numbers multiplied together.
642392128 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of one hundred twelve divisors.
Prime factorization of 642392128:
26 × 7 × 19 × 163 × 463
(2 × 2 × 2 × 2 × 2 × 2 × 7 × 19 × 163 × 463)See below for interesting mathematical facts about the number 642392128 from the Numbermatics database.
Names of 642392128
- Cardinal: 642392128 can be written as Six hundred forty-two million, three hundred ninety-two thousand, one hundred twenty-eight.
Scientific notation
- Scientific notation: 6.42392128 × 108
Factors of 642392128
Divisors of 642392128
- Number of divisors d(n): 112
-
Complete list of divisors:
1 2 4 7 8 14 16 19 28 32 38 56 64 76 112 133 152 163 224 266 304 326 448 463 532 608 652 926 1064 1141 1216 1304 1852 2128 2282 2608 3097 3241 3704 4256 4564 5216 6194 6482 7408 8512 8797 9128 10432 12388 12964 14816 17594 18256 21679 24776 25928 29632 35188 36512 43358 49552 51856 61579 70376 73024 75469 86716 99104 103712 123158 140752 150938 173432 198208 207424 246316 281504 301876 346864 492632 528283 563008 603752 693728 985264 1056566 1207504 1387456 1433911 1970528 2113132 2415008 2867822 3941056 4226264 4830016 5735644 8452528 10037377 11471288 16905056 20074754 22942576 33810112 40149508 45885152 80299016 91770304 160598032 321196064 642392128
- Sum of all divisors σ(n): 1546270720
- Sum of proper divisors (its aliquot sum) s(n): 903878592
- 642392128 is an abundant number, because the sum of its proper divisors (903878592) is greater than itself. Its abundance is 261486464
Bases of 642392128
- Binary: 1001100100101000100000010000002
- Hexadecimal: 0x264A2040
- Base-36: AMGOXS
Squares and roots of 642392128
- 642392128 squared (6423921282) is 412667646116368384
- 642392128 cubed (6423921283) is 265094447345444821829681152
-
The
square root of 642392128 is 25345.4557662711 -
The
cube root of 642392128 is 862.8462251527
Scales and comparisons
How big is 642392128?- 642,392,128 seconds is equal to 20 years, 22 weeks, 1 day, 2 hours, 15 minutes, 28 seconds.
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To count from 1 to 642,392,128 would take you about thirty 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 642392128 cubic inches would be around 71.9 feet tall.
Recreational maths with 642392128
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