68006640
68,006,640 is an even composite number composed of six prime numbers multiplied together.
68006640 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of one hundred sixty divisors.
Prime factorization of 68006640:
24 × 3 × 5 × 13 × 71 × 307
(2 × 2 × 2 × 2 × 3 × 5 × 13 × 71 × 307)See below for interesting mathematical facts about the number 68006640 from the Numbermatics database.
Names of 68006640
- Cardinal: 68006640 can be written as Sixty-eight million, six thousand, six hundred forty.
Scientific notation
- Scientific notation: 6.800664 × 107
Factors of 68006640
Divisors of 68006640
- Number of divisors d(n): 160
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Complete list of divisors:
1 2 3 4 5 6 8 10 12 13 15 16 20 24 26 30 39 40 48 52 60 65 71 78 80 104 120 130 142 156 195 208 213 240 260 284 307 312 355 390 426 520 568 614 624 710 780 852 921 923 1040 1065 1136 1228 1420 1535 1560 1704 1842 1846 2130 2456 2769 2840 3070 3120 3408 3684 3692 3991 4260 4605 4615 4912 5538 5680 6140 7368 7384 7982 8520 9210 9230 11076 11973 12280 13845 14736 14768 15964 17040 18420 18460 19955 21797 22152 23946 24560 27690 31928 36840 36920 39910 43594 44304 47892 55380 59865 63856 65391 73680 73840 79820 87188 95784 108985 110760 119730 130782 159640 174376 191568 217970 221520 239460 261564 283361 319280 326955 348752 435940 478920 523128 566722 653910 850083 871880 957840 1046256 1133444 1307820 1416805 1700166 1743760 2266888 2615640 2833610 3400332 4250415 4533776 5231280 5667220 6800664 8500830 11334440 13601328 17001660 22668880 34003320 68006640
- Sum of all divisors σ(n): 230985216
- Sum of proper divisors (its aliquot sum) s(n): 162978576
- 68006640 is an abundant number, because the sum of its proper divisors (162978576) is greater than itself. Its abundance is 94971936
Bases of 68006640
- Binary: 1000000110110110010111100002
- Hexadecimal: 0x40DB2F0
- Base-36: 14HM9C
Squares and roots of 68006640
- 68006640 squared (680066402) is 4624903084089600
- 68006640 cubed (680066403) is 314524119074571154944000
-
The
square root of 68006640 is 8246.6138505449 -
The
cube root of 68006640 is 408.1787951465
Scales and comparisons
How big is 68006640?- 68,006,640 seconds is equal to 2 years, 8 weeks, 3 days, 2 hours, 44 minutes.
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To count from 1 to 68,006,640 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 68006640 cubic inches would be around 34 feet tall.
Recreational maths with 68006640
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