21404720

21,404,720 is an even composite number composed of four prime numbers multiplied together.

What does the number 21404720 look like?

This visualization shows the relationship between its 4 prime factors (large circles) and 40 divisors.

21404720 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of forty divisors.

Prime factorization of 21404720:

2⁴ × 5 × 23 × 11633

(2 × 2 × 2 × 2 × 5 × 23 × 11633)

See below for interesting mathematical facts about the number 21404720 from the Numbermatics database.

Names of 21404720

Cardinal: 21404720 can be written as Twenty-one million, four hundred four thousand, seven hundred twenty.

Scientific notation

Scientific notation: 2.140472 × 10⁷

Factors of 21404720

Number of distinct prime factors ω(n): 4
Total number of prime factors Ω(n): 7
Sum of prime factors: 11663

Divisors of 21404720

Number of divisors d(n): 40
Complete list of divisors:
1 2 4 5 8 10 16 20 23 40 46 80 92 115 184 230 368 460 920 1840 11633 23266 46532 58165 93064 116330 186128 232660 267559 465320 535118 930640 1070236 1337795 2140472 2675590 4280944 5351180 10702360 21404720
Sum of all divisors σ(n): 51934176
Sum of proper divisors (its aliquot sum) s(n): 30529456
21404720 is an abundant number, because the sum of its proper divisors (30529456) is greater than itself. Its abundance is 9124736

Bases of 21404720

Binary: 1010001101001110000110000₂
Hexadecimal: 0x1469C30
Base-36: CQRZK

Squares and roots of 21404720

21404720 squared (21404720²) is 458162038278400
21404720 cubed (21404720³) is 9806830143978434048000
The square root of 21404720 is 4626.5235328483
The cube root of 21404720 is 277.6535200095

Scales and comparisons

How big is 21404720?

21,404,720 seconds is equal to 35 weeks, 2 days, 17 hours, 45 minutes, 20 seconds.
To count from 1 to 21,404,720 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 21404720 cubic inches would be around 23.1 feet tall.

Recreational maths with 21404720

21404720 backwards is 02740412
21404720 is a Harshad number.
The number of decimal digits it has is: 8
The sum of 21404720's digits is 20
More coming soon!

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The information we have on file for 21404720 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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