21275840

21,275,840 is an even composite number composed of four prime numbers multiplied together.

What does the number 21275840 look like?

This visualization shows the relationship between its 4 prime factors (large circles) and 56 divisors.

21275840 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of fifty-six divisors.

Prime factorization of 21275840:

2⁶ × 5 × 17 × 3911

(2 × 2 × 2 × 2 × 2 × 2 × 5 × 17 × 3911)

See below for interesting mathematical facts about the number 21275840 from the Numbermatics database.

Names of 21275840

Cardinal: 21275840 can be written as Twenty-one million, two hundred seventy-five thousand, eight hundred forty.

Scientific notation

Scientific notation: 2.127584 × 10⁷

Factors of 21275840

Number of distinct prime factors ω(n): 4
Total number of prime factors Ω(n): 9
Sum of prime factors: 3935

Divisors of 21275840

Number of divisors d(n): 56
Complete list of divisors:
1 2 4 5 8 10 16 17 20 32 34 40 64 68 80 85 136 160 170 272 320 340 544 680 1088 1360 2720 3911 5440 7822 15644 19555 31288 39110 62576 66487 78220 125152 132974 156440 250304 265948 312880 332435 531896 625760 664870 1063792 1251520 1329740 2127584 2659480 4255168 5318960 10637920 21275840
Sum of all divisors σ(n): 53656992
Sum of proper divisors (its aliquot sum) s(n): 32381152
21275840 is an abundant number, because the sum of its proper divisors (32381152) is greater than itself. Its abundance is 11105312

Bases of 21275840

Binary: 1010001001010010011000000₂
Hexadecimal: 0x144A4C0
Base-36: CO0JK

Squares and roots of 21275840

21275840 squared (21275840²) is 452661367705600
21275840 cubed (21275840³) is 9630750833485512704000
The square root of 21275840 is 4612.5741186457
The cube root of 21275840 is 277.0951377689

Scales and comparisons

How big is 21275840?

21,275,840 seconds is equal to 35 weeks, 1 day, 5 hours, 57 minutes, 20 seconds.
To count from 1 to 21,275,840 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 21275840 cubic inches would be around 23.1 feet tall.

Recreational maths with 21275840

21275840 backwards is 04857212
The number of decimal digits it has is: 8
The sum of 21275840's digits is 29
More coming soon!

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The information we have on file for 21275840 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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