21001200
21,001,200 is an even composite number composed of six prime numbers multiplied together.
21001200 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of two hundred forty divisors.
Prime factorization of 21001200:
24 × 3 × 52 × 11 × 37 × 43
(2 × 2 × 2 × 2 × 3 × 5 × 5 × 11 × 37 × 43)See below for interesting mathematical facts about the number 21001200 from the Numbermatics database.
Names of 21001200
- Cardinal: 21001200 can be written as Twenty-one million, one thousand, two hundred.
Scientific notation
- Scientific notation: 2.10012 × 107
Factors of 21001200
Divisors of 21001200
- Number of divisors d(n): 240
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Complete list of divisors:
1 2 3 4 5 6 8 10 11 12 15 16 20 22 24 25 30 33 37 40 43 44 48 50 55 60 66 74 75 80 86 88 100 110 111 120 129 132 148 150 165 172 176 185 200 215 220 222 240 258 264 275 296 300 330 344 370 400 407 430 440 444 473 516 528 550 555 592 600 645 660 688 740 814 825 860 880 888 925 946 1032 1075 1100 1110 1200 1221 1290 1320 1419 1480 1591 1628 1650 1720 1776 1850 1892 2035 2064 2150 2200 2220 2365 2442 2580 2640 2775 2838 2960 3182 3225 3256 3300 3440 3700 3784 4070 4300 4400 4440 4730 4773 4884 5160 5550 5676 6105 6364 6450 6512 6600 7095 7400 7568 7955 8140 8600 8880 9460 9546 9768 10175 10320 11100 11352 11825 12210 12728 12900 13200 14190 14800 15910 16280 17200 17501 18920 19092 19536 20350 22200 22704 23650 23865 24420 25456 25800 28380 30525 31820 32560 35002 35475 37840 38184 39775 40700 44400 47300 47730 48840 51600 52503 56760 61050 63640 70004 70950 76368 79550 81400 87505 94600 95460 97680 105006 113520 119325 122100 127280 140008 141900 159100 162800 175010 189200 190920 210012 238650 244200 262515 280016 283800 318200 350020 381840 420024 437525 477300 488400 525030 567600 636400 700040 840048 875050 954600 1050060 1312575 1400080 1750100 1909200 2100120 2625150 3500200 4200240 5250300 7000400 10500600 21001200
- Sum of all divisors σ(n): 77126016
- Sum of proper divisors (its aliquot sum) s(n): 56124816
- 21001200 is an abundant number, because the sum of its proper divisors (56124816) is greater than itself. Its abundance is 35123616
Bases of 21001200
- Binary: 10100000001110011111100002
- Hexadecimal: 0x14073F0
- Base-36: CI4MO
Squares and roots of 21001200
- 21001200 squared (210012002) is 441050401440000
- 21001200 cubed (210012003) is 9262587690721728000000
-
The
square root of 21001200 is 4582.7066238195 -
The
cube root of 21001200 is 275.8976726317
Scales and comparisons
How big is 21001200?- 21,001,200 seconds is equal to 34 weeks, 5 days, 1 hour, 40 minutes.
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To count from 1 to 21,001,200 would take you about fourteen hours!
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 21001200 cubic inches would be around 23 feet tall.
Recreational maths with 21001200
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