639996672
639,996,672 is an even composite number composed of four prime numbers multiplied together.
639996672 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of seventy-two divisors.
Prime factorization of 639996672:
28 × 3 × 7 × 119047
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 3 × 7 × 119047)See below for interesting mathematical facts about the number 639996672 from the Numbermatics database.
Names of 639996672
- Cardinal: 639996672 can be written as Six hundred thirty-nine million, nine hundred ninety-six thousand, six hundred seventy-two.
Scientific notation
- Scientific notation: 6.39996672 × 108
Factors of 639996672
Divisors of 639996672
- Number of divisors d(n): 72
-
Complete list of divisors:
1 2 3 4 6 7 8 12 14 16 21 24 28 32 42 48 56 64 84 96 112 128 168 192 224 256 336 384 448 672 768 896 1344 1792 2688 5376 119047 238094 357141 476188 714282 833329 952376 1428564 1666658 1904752 2499987 2857128 3333316 3809504 4999974 5714256 6666632 7619008 9999948 11428512 13333264 15238016 19999896 22857024 26666528 30476032 39999792 45714048 53333056 79999584 91428096 106666112 159999168 213332224 319998336 639996672
- Sum of all divisors σ(n): 1946672896
- Sum of proper divisors (its aliquot sum) s(n): 1306676224
- 639996672 is an abundant number, because the sum of its proper divisors (1306676224) is greater than itself. Its abundance is 666679552
Bases of 639996672
- Binary: 1001100010010110010011000000002
- Hexadecimal: 0x26259300
- Base-36: AL1CLC
Squares and roots of 639996672
- 639996672 squared (6399966722) is 409595740171075584
- 639996672 cubed (6399966723) is 262139910574865084420456448
-
The
square root of 639996672 is 25298.1555058861 -
The
cube root of 639996672 is 861.7723822689
Scales and comparisons
How big is 639996672?- 639,996,672 seconds is equal to 20 years, 18 weeks, 1 day, 8 hours, 51 minutes, 12 seconds.
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To count from 1 to 639,996,672 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 639996672 cubic inches would be around 71.8 feet tall.
Recreational maths with 639996672
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