21447020

21,447,020 is an even composite number composed of five prime numbers multiplied together.

What does the number 21447020 look like?

This visualization shows the relationship between its 5 prime factors (large circles) and 48 divisors.

21447020 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of forty-eight divisors.

Prime factorization of 21447020:

2² × 5 × 7 × 307 × 499

(2 × 2 × 5 × 7 × 307 × 499)

See below for interesting mathematical facts about the number 21447020 from the Numbermatics database.

Names of 21447020

Cardinal: 21447020 can be written as Twenty-one million, four hundred forty-seven thousand and twenty.

Scientific notation

Scientific notation: 2.144702 × 10⁷

Factors of 21447020

Number of distinct prime factors ω(n): 5
Total number of prime factors Ω(n): 6
Sum of prime factors: 820

Divisors of 21447020

Number of divisors d(n): 48
Complete list of divisors:
1 2 4 5 7 10 14 20 28 35 70 140 307 499 614 998 1228 1535 1996 2149 2495 3070 3493 4298 4990 6140 6986 8596 9980 10745 13972 17465 21490 34930 42980 69860 153193 306386 612772 765965 1072351 1531930 2144702 3063860 4289404 5361755 10723510 21447020
Sum of all divisors σ(n): 51744000
Sum of proper divisors (its aliquot sum) s(n): 30296980
21447020 is an abundant number, because the sum of its proper divisors (30296980) is greater than itself. Its abundance is 8849960

Bases of 21447020

Binary: 1010001110100000101101100₂
Hexadecimal: 0x147416C
Base-36: CROMK

Squares and roots of 21447020

21447020 squared (21447020²) is 459974666880400
21447020 cubed (21447020³) is 9865085880077276408000
The square root of 21447020 is 4631.0927436189
The cube root of 21447020 is 277.8362992549

Scales and comparisons

How big is 21447020?

21,447,020 seconds is equal to 35 weeks, 3 days, 5 hours, 30 minutes, 20 seconds.
To count from 1 to 21,447,020 would take you about eight 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 21447020 cubic inches would be around 23.2 feet tall.

Recreational maths with 21447020

21447020 backwards is 02074412
21447020 is a Harshad number.
The number of decimal digits it has is: 8
The sum of 21447020's digits is 20
More coming soon!

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The information we have on file for 21447020 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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