21306740
21,306,740 is an even composite number composed of six prime numbers multiplied together.
21306740 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of ninety-six divisors.
Prime factorization of 21306740:
22 × 5 × 7 × 13 × 23 × 509
(2 × 2 × 5 × 7 × 13 × 23 × 509)See below for interesting mathematical facts about the number 21306740 from the Numbermatics database.
Names of 21306740
- Cardinal: 21306740 can be written as Twenty-one million, three hundred six thousand, seven hundred forty.
Scientific notation
- Scientific notation: 2.130674 × 107
Factors of 21306740
Divisors of 21306740
- Number of divisors d(n): 96
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Complete list of divisors:
1 2 4 5 7 10 13 14 20 23 26 28 35 46 52 65 70 91 92 115 130 140 161 182 230 260 299 322 364 455 460 509 598 644 805 910 1018 1196 1495 1610 1820 2036 2093 2545 2990 3220 3563 4186 5090 5980 6617 7126 8372 10180 10465 11707 13234 14252 17815 20930 23414 26468 33085 35630 41860 46319 46828 58535 66170 71260 81949 92638 117070 132340 152191 163898 185276 231595 234140 304382 327796 409745 463190 608764 760955 819490 926380 1065337 1521910 1638980 2130674 3043820 4261348 5326685 10653370 21306740
- Sum of all divisors σ(n): 57576960
- Sum of proper divisors (its aliquot sum) s(n): 36270220
- 21306740 is an abundant number, because the sum of its proper divisors (36270220) is greater than itself. Its abundance is 14963480
Bases of 21306740
- Binary: 10100010100011101011101002
- Hexadecimal: 0x1451D74
- Base-36: COODW
Squares and roots of 21306740
- 21306740 squared (213067402) is 453977169427600
- 21306740 cubed (213067403) is 9672773514929822024000
-
The
square root of 21306740 is 4615.9224430227 -
The
cube root of 21306740 is 277.2292193997
Scales and comparisons
How big is 21306740?- 21,306,740 seconds is equal to 35 weeks, 1 day, 14 hours, 32 minutes, 20 seconds.
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To count from 1 to 21,306,740 would take you about five 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 21306740 cubic inches would be around 23.1 feet tall.
Recreational maths with 21306740
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The information we have on file for 21306740 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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