21213900
21,213,900 is an even composite number composed of four prime numbers multiplied together.
21213900 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of one hundred forty-four divisors.
Prime factorization of 21213900:
22 × 37 × 52 × 97
(2 × 2 × 3 × 3 × 3 × 3 × 3 × 3 × 3 × 5 × 5 × 97)See below for interesting mathematical facts about the number 21213900 from the Numbermatics database.
Names of 21213900
- Cardinal: 21213900 can be written as Twenty-one million, two hundred thirteen thousand, nine hundred.
Scientific notation
- Scientific notation: 2.12139 × 107
Factors of 21213900
Divisors of 21213900
- Number of divisors d(n): 144
-
Complete list of divisors:
1 2 3 4 5 6 9 10 12 15 18 20 25 27 30 36 45 50 54 60 75 81 90 97 100 108 135 150 162 180 194 225 243 270 291 300 324 388 405 450 485 486 540 582 675 729 810 873 900 970 972 1164 1215 1350 1455 1458 1620 1746 1940 2025 2187 2425 2430 2619 2700 2910 2916 3492 3645 4050 4365 4374 4850 4860 5238 5820 6075 7275 7290 7857 8100 8730 8748 9700 10476 10935 12150 13095 14550 14580 15714 17460 18225 21825 21870 23571 24300 26190 29100 31428 36450 39285 43650 43740 47142 52380 54675 65475 70713 72900 78570 87300 94284 109350 117855 130950 141426 157140 196425 212139 218700 235710 261900 282852 353565 392850 424278 471420 589275 707130 785700 848556 1060695 1178550 1414260 1767825 2121390 2357100 3535650 4242780 5303475 7071300 10606950 21213900
- Sum of all divisors σ(n): 69752480
- Sum of proper divisors (its aliquot sum) s(n): 48538580
- 21213900 is an abundant number, because the sum of its proper divisors (48538580) is greater than itself. Its abundance is 27324680
Bases of 21213900
- Binary: 10100001110110010110011002
- Hexadecimal: 0x143B2CC
- Base-36: CMOR0
Squares and roots of 21213900
- 21213900 squared (212139002) is 450029553210000
- 21213900 cubed (212139003) is 9546881938841619000000
-
The
square root of 21213900 is 4605.8549694927 -
The
cube root of 21213900 is 276.8259755713
Scales and comparisons
How big is 21213900?- 21,213,900 seconds is equal to 35 weeks, 12 hours, 45 minutes.
-
To count from 1 to 21,213,900 would take you about four days!
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 21213900 cubic inches would be around 23.1 feet tall.
Recreational maths with 21213900
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The information we have on file for 21213900 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!
Keywords: Divisors of 21213900, math, Factors of 21213900, curriculum, school, college, exams, university, Prime factorization of 21213900, STEM, science, technology, engineering, physics, economics, calculator, twenty-one million, two hundred thirteen thousand, nine hundred.