20721664

20,721,664 is an even composite number composed of two prime numbers multiplied together.

What does the number 20721664 look like?

This visualization shows the relationship between its 2 prime factors (large circles) and 26 divisors.

20721664 is an even composite number. It is composed of two distinct prime numbers multiplied together. It has a total of twenty-six divisors.

Prime factorization of 20721664:

2¹² × 5059

(2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 5059)

See below for interesting mathematical facts about the number 20721664 from the Numbermatics database.

Names of 20721664

Cardinal: 20721664 can be written as Twenty million, seven hundred twenty-one thousand, six hundred sixty-four.

Scientific notation

Scientific notation: 2.0721664 × 10⁷

Factors of 20721664

Number of distinct prime factors ω(n): 2
Total number of prime factors Ω(n): 13
Sum of prime factors: 5061

Divisors of 20721664

Number of divisors d(n): 26
Complete list of divisors:
1 2 4 8 16 32 64 128 256 512 1024 2048 4096 5059 10118 20236 40472 80944 161888 323776 647552 1295104 2590208 5180416 10360832 20721664
Sum of all divisors σ(n): 41446460
Sum of proper divisors (its aliquot sum) s(n): 20724796
20721664 is an abundant number, because the sum of its proper divisors (20724796) is greater than itself. Its abundance is 3132

Bases of 20721664

Binary: 1001111000011000000000000₂
Hexadecimal: 0x13C3000
Base-36: CC4XS

Squares and roots of 20721664

20721664 squared (20721664²) is 429387358928896
20721664 cubed (20721664³) is 8897620577571982802944
The square root of 20721664 is 4552.1054469333
The cube root of 20721664 is 274.6680910265

Scales and comparisons

How big is 20721664?

20,721,664 seconds is equal to 34 weeks, 1 day, 20 hours, 1 minute, 4 seconds.
To count from 1 to 20,721,664 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 20721664 cubic inches would be around 22.9 feet tall.

Recreational maths with 20721664

20721664 backwards is 46612702
The number of decimal digits it has is: 8
The sum of 20721664's digits is 28
More coming soon!

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The information we have on file for 20721664 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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