68368640
68,368,640 is an even composite number composed of four prime numbers multiplied together.
68368640 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 68368640:
28 × 5 × 31 × 1723
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 5 × 31 × 1723)See below for interesting mathematical facts about the number 68368640 from the Numbermatics database.
Names of 68368640
- Cardinal: 68368640 can be written as Sixty-eight million, three hundred sixty-eight thousand, six hundred forty.
Scientific notation
- Scientific notation: 6.836864 × 107
Factors of 68368640
Divisors of 68368640
- Number of divisors d(n): 72
-
Complete list of divisors:
1 2 4 5 8 10 16 20 31 32 40 62 64 80 124 128 155 160 248 256 310 320 496 620 640 992 1240 1280 1723 1984 2480 3446 3968 4960 6892 7936 8615 9920 13784 17230 19840 27568 34460 39680 53413 55136 68920 106826 110272 137840 213652 220544 267065 275680 427304 441088 534130 551360 854608 1068260 1102720 1709216 2136520 2205440 3418432 4273040 6836864 8546080 13673728 17092160 34184320 68368640
- Sum of all divisors σ(n): 169145088
- Sum of proper divisors (its aliquot sum) s(n): 100776448
- 68368640 is an abundant number, because the sum of its proper divisors (100776448) is greater than itself. Its abundance is 32407808
Bases of 68368640
- Binary: 1000001001100111001000000002
- Hexadecimal: 0x4133900
- Base-36: 14PDKW
Squares and roots of 68368640
- 68368640 squared (683686402) is 4674270935449600
- 68368640 cubed (683686403) is 319573546848216940544000
-
The
square root of 68368640 is 8268.5331226283 -
The
cube root of 68368640 is 408.9017604295
Scales and comparisons
How big is 68368640?- 68,368,640 seconds is equal to 2 years, 9 weeks, 7 hours, 17 minutes, 20 seconds.
-
To count from 1 to 68,368,640 would take you about three 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 68368640 cubic inches would be around 34.1 feet tall.
Recreational maths with 68368640
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