20644728

20,644,728 is an even composite number composed of four prime numbers multiplied together.

What does the number 20644728 look like?

This visualization shows the relationship between its 4 prime factors (large circles) and 32 divisors.

20644728 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of thirty-two divisors.

Prime factorization of 20644728:

2³ × 3 × 13 × 66169

(2 × 2 × 2 × 3 × 13 × 66169)

See below for interesting mathematical facts about the number 20644728 from the Numbermatics database.

Names of 20644728

Cardinal: 20644728 can be written as Twenty million, six hundred forty-four thousand, seven hundred twenty-eight.

Scientific notation

Scientific notation: 2.0644728 × 10⁷

Factors of 20644728

Number of distinct prime factors ω(n): 4
Total number of prime factors Ω(n): 6
Sum of prime factors: 66187

Divisors of 20644728

Number of divisors d(n): 32
Complete list of divisors:
1 2 3 4 6 8 12 13 24 26 39 52 78 104 156 312 66169 132338 198507 264676 397014 529352 794028 860197 1588056 1720394 2580591 3440788 5161182 6881576 10322364 20644728
Sum of all divisors σ(n): 55582800
Sum of proper divisors (its aliquot sum) s(n): 34938072
20644728 is an abundant number, because the sum of its proper divisors (34938072) is greater than itself. Its abundance is 14293344

Bases of 20644728

Binary: 1001110110000001101111000₂
Hexadecimal: 0x13B0378
Base-36: CAHKO

Squares and roots of 20644728

20644728 squared (20644728²) is 426204794193984
20644728 cubed (20644728³) is 8798882048430778916352
The square root of 20644728 is 4543.6469933303
The cube root of 20644728 is 274.3277375469

Scales and comparisons

How big is 20644728?

20,644,728 seconds is equal to 34 weeks, 22 hours, 38 minutes, 48 seconds.
To count from 1 to 20,644,728 would take you about fifty-one weeks!

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 20644728 cubic inches would be around 22.9 feet tall.

Recreational maths with 20644728

20644728 backwards is 82744602
The number of decimal digits it has is: 8
The sum of 20644728's digits is 33
More coming soon!

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The information we have on file for 20644728 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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