640138248
640,138,248 is an even composite number composed of four prime numbers multiplied together.
640138248 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of one hundred twenty-eight divisors.
Prime factorization of 640138248:
23 × 33 × 413 × 43
(2 × 2 × 2 × 3 × 3 × 3 × 41 × 41 × 41 × 43)See below for interesting mathematical facts about the number 640138248 from the Numbermatics database.
Names of 640138248
- Cardinal: 640138248 can be written as Six hundred forty million, one hundred thirty-eight thousand, two hundred forty-eight.
Scientific notation
- Scientific notation: 6.40138248 × 108
Factors of 640138248
Divisors of 640138248
- Number of divisors d(n): 128
-
Complete list of divisors:
1 2 3 4 6 8 9 12 18 24 27 36 41 43 54 72 82 86 108 123 129 164 172 216 246 258 328 344 369 387 492 516 738 774 984 1032 1107 1161 1476 1548 1681 1763 2214 2322 2952 3096 3362 3526 4428 4644 5043 5289 6724 7052 8856 9288 10086 10578 13448 14104 15129 15867 20172 21156 30258 31734 40344 42312 45387 47601 60516 63468 68921 72283 90774 95202 121032 126936 137842 144566 181548 190404 206763 216849 275684 289132 363096 380808 413526 433698 551368 578264 620289 650547 827052 867396 1240578 1301094 1654104 1734792 1860867 1951641 2481156 2602188 2963603 3721734 3903282 4962312 5204376 5927206 7443468 7806564 8890809 11854412 14886936 15613128 17781618 23708824 26672427 35563236 53344854 71126472 80017281 106689708 160034562 213379416 320069124 640138248
- Sum of all divisors σ(n): 1865001600
- Sum of proper divisors (its aliquot sum) s(n): 1224863352
- 640138248 is an abundant number, because the sum of its proper divisors (1224863352) is greater than itself. Its abundance is 584725104
Bases of 640138248
- Binary: 1001100010011110111100000010002
- Hexadecimal: 0x2627BC08
- Base-36: AL4DU0
Squares and roots of 640138248
- 640138248 squared (6401382482) is 409776976552509504
- 640138248 cubed (6401382483) is 262313915841060513893908992
-
The
square root of 640138248 is 25300.9534998189 -
The
cube root of 640138248 is 861.8359228551
Scales and comparisons
How big is 640138248?- 640,138,248 seconds is equal to 20 years, 18 weeks, 3 days, 10 minutes, 48 seconds.
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To count from 1 to 640,138,248 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 640138248 cubic inches would be around 71.8 feet tall.
Recreational maths with 640138248
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