68988640
68,988,640 is an even composite number composed of five prime numbers multiplied together.
68988640 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of ninety-six divisors.
Prime factorization of 68988640:
25 × 5 × 7 × 31 × 1987
(2 × 2 × 2 × 2 × 2 × 5 × 7 × 31 × 1987)See below for interesting mathematical facts about the number 68988640 from the Numbermatics database.
Names of 68988640
- Cardinal: 68988640 can be written as Sixty-eight million, nine hundred eighty-eight thousand, six hundred forty.
Scientific notation
- Scientific notation: 6.898864 × 107
Factors of 68988640
Divisors of 68988640
- Number of divisors d(n): 96
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Complete list of divisors:
1 2 4 5 7 8 10 14 16 20 28 31 32 35 40 56 62 70 80 112 124 140 155 160 217 224 248 280 310 434 496 560 620 868 992 1085 1120 1240 1736 1987 2170 2480 3472 3974 4340 4960 6944 7948 8680 9935 13909 15896 17360 19870 27818 31792 34720 39740 55636 61597 63584 69545 79480 111272 123194 139090 158960 222544 246388 278180 307985 317920 431179 445088 492776 556360 615970 862358 985552 1112720 1231940 1724716 1971104 2155895 2225440 2463880 3449432 4311790 4927760 6898864 8623580 9855520 13797728 17247160 34494320 68988640
- Sum of all divisors σ(n): 192374784
- Sum of proper divisors (its aliquot sum) s(n): 123386144
- 68988640 is an abundant number, because the sum of its proper divisors (123386144) is greater than itself. Its abundance is 54397504
Bases of 68988640
- Binary: 1000001110010101110111000002
- Hexadecimal: 0x41CAEE0
- Base-36: 152NZ4
Squares and roots of 68988640
- 68988640 squared (689886402) is 4759432449049600
- 68988640 cubed (689886403) is 328346771831801196544000
-
The
square root of 68988640 is 8305.9400431257 -
The
cube root of 68988640 is 410.1340826579
Scales and comparisons
How big is 68988640?- 68,988,640 seconds is equal to 2 years, 10 weeks, 11 hours, 30 minutes, 40 seconds.
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To count from 1 to 68,988,640 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 68988640 cubic inches would be around 34.2 feet tall.
Recreational maths with 68988640
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