21772

21,772 is an even composite number composed of two prime numbers multiplied together.

What does the number 21772 look like?

This visualization shows the relationship between its 2 prime factors (large circles) and 6 divisors.

21772 is an even composite number. It is composed of two distinct prime numbers multiplied together. It has a total of six divisors.

Prime factorization of 21772:

2² × 5443

(2 × 2 × 5443)

See below for interesting mathematical facts about the number 21772 from the Numbermatics database.

Names of 21772

Cardinal: 21772 can be written as Twenty-one thousand, seven hundred seventy-two.

Scientific notation

Scientific notation: 2.1772 × 10⁴

Factors of 21772

Number of distinct prime factors ω(n): 2
Total number of prime factors Ω(n): 3
Sum of prime factors: 5445

Divisors of 21772

Number of divisors d(n): 6
Complete list of divisors:
1 2 4 5443 10886 21772
Sum of all divisors σ(n): 38108
Sum of proper divisors (its aliquot sum) s(n): 16336
21772 is a deficient number, because the sum of its proper divisors (16336) is less than itself. Its deficiency is 5436

Bases of 21772

Binary: 101010100001100₂
Hexadecimal: 0x550C
Base-36: GSS

Squares and roots of 21772

21772 squared (21772²) is 474019984
21772 cubed (21772³) is 10320363091648
The square root of 21772 is 147.5533801713
The cube root of 21772 is 27.9232592533

Scales and comparisons

How big is 21772?

21,772 seconds is equal to 6 hours, 2 minutes, 52 seconds.
To count from 1 to 21,772 would take you about six 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 21772 cubic inches would be around 2.3 feet tall.

Recreational maths with 21772

21772 backwards is 27712
The number of decimal digits it has is: 5
The sum of 21772's digits is 19
More coming soon!

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The information we have on file for 21772 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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