68109440
68,109,440 is an even composite number composed of five prime numbers multiplied together.
68109440 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of one hundred twenty-eight divisors.
Prime factorization of 68109440:
27 × 5 × 7 × 23 × 661
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 5 × 7 × 23 × 661)See below for interesting mathematical facts about the number 68109440 from the Numbermatics database.
Names of 68109440
- Cardinal: 68109440 can be written as Sixty-eight million, one hundred nine thousand, four hundred forty.
Scientific notation
- Scientific notation: 6.810944 × 107
Factors of 68109440
Divisors of 68109440
- Number of divisors d(n): 128
-
Complete list of divisors:
1 2 4 5 7 8 10 14 16 20 23 28 32 35 40 46 56 64 70 80 92 112 115 128 140 160 161 184 224 230 280 320 322 368 448 460 560 640 644 661 736 805 896 920 1120 1288 1322 1472 1610 1840 2240 2576 2644 2944 3220 3305 3680 4480 4627 5152 5288 6440 6610 7360 9254 10304 10576 12880 13220 14720 15203 18508 20608 21152 23135 25760 26440 30406 37016 42304 46270 51520 52880 60812 74032 76015 84608 92540 103040 105760 106421 121624 148064 152030 185080 211520 212842 243248 296128 304060 370160 423040 425684 486496 532105 592256 608120 740320 851368 972992 1064210 1216240 1480640 1702736 1945984 2128420 2432480 2961280 3405472 4256840 4864960 6810944 8513680 9729920 13621888 17027360 34054720 68109440
- Sum of all divisors σ(n): 194469120
- Sum of proper divisors (its aliquot sum) s(n): 126359680
- 68109440 is an abundant number, because the sum of its proper divisors (126359680) is greater than itself. Its abundance is 58250240
Bases of 68109440
- Binary: 1000000111101000100100000002
- Hexadecimal: 0x40F4480
- Base-36: 14JTKW
Squares and roots of 68109440
- 68109440 squared (681094402) is 4638895817113600
- 68109440 cubed (681094403) is 315952596321949712384000
-
The
square root of 68109440 is 8252.8443581591 -
The
cube root of 68109440 is 408.3843616177
Scales and comparisons
How big is 68109440?- 68,109,440 seconds is equal to 2 years, 8 weeks, 4 days, 7 hours, 17 minutes, 20 seconds.
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To count from 1 to 68,109,440 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 68109440 cubic inches would be around 34 feet tall.
Recreational maths with 68109440
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