1261440
1,261,440 is an even composite number composed of four prime numbers multiplied together.
1261440 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of one hundred twenty-eight divisors.
Prime factorization of 1261440:
27 × 33 × 5 × 73
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 3 × 3 × 3 × 5 × 73)See below for interesting mathematical facts about the number 1261440 from the Numbermatics database.
Names of 1261440
- Cardinal: 1261440 can be written as One million, two hundred sixty-one thousand, four hundred forty.
Scientific notation
- Scientific notation: 1.26144 × 106
Factors of 1261440
Divisors of 1261440
- Number of divisors d(n): 128
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Complete list of divisors:
1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 27 30 32 36 40 45 48 54 60 64 72 73 80 90 96 108 120 128 135 144 146 160 180 192 216 219 240 270 288 292 320 360 365 384 432 438 480 540 576 584 640 657 720 730 864 876 960 1080 1095 1152 1168 1314 1440 1460 1728 1752 1920 1971 2160 2190 2336 2628 2880 2920 3285 3456 3504 3942 4320 4380 4672 5256 5760 5840 6570 7008 7884 8640 8760 9344 9855 10512 11680 13140 14016 15768 17280 17520 19710 21024 23360 26280 28032 31536 35040 39420 42048 46720 52560 63072 70080 78840 84096 105120 126144 140160 157680 210240 252288 315360 420480 630720 1261440
- Sum of all divisors σ(n): 4528800
- Sum of proper divisors (its aliquot sum) s(n): 3267360
- 1261440 is an abundant number, because the sum of its proper divisors (3267360) is greater than itself. Its abundance is 2005920
Bases of 1261440
- Binary: 1001100111111100000002
- Hexadecimal: 0x133F80
- Base-36: R1C0
Squares and roots of 1261440
- 1261440 squared (12614402) is 1591230873600
- 1261440 cubed (12614403) is 2007242273193984000
-
The
square root of 1261440 is 1123.1384598525 -
The
cube root of 1261440 is 108.0493601531
Scales and comparisons
How big is 1261440?- 1,261,440 seconds is equal to 2 weeks, 14 hours, 24 minutes.
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To count from 1 to 1,261,440 would take you about three weeks!
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 1261440 cubic inches would be around 9 feet tall.
Recreational maths with 1261440
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The information we have on file for 1261440 includes mathematical data and numerical statistics calculated using standard algorithms and methods. We are adding more all the time. If there are any features you would like to see, please contact us. Information provided for educational use, intellectual curiosity and fun!
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