221355728

221,355,728 is an even composite number composed of four prime numbers multiplied together.

What does the number 221355728 look like?

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

221355728 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 221355728:

2⁴ × 11 × 59 × 21317

(2 × 2 × 2 × 2 × 11 × 59 × 21317)

See below for interesting mathematical facts about the number 221355728 from the Numbermatics database.

Names of 221355728

Cardinal: 221355728 can be written as Two hundred twenty-one million, three hundred fifty-five thousand, seven hundred twenty-eight.

Scientific notation

Scientific notation: 2.21355728 × 10⁸

Factors of 221355728

Number of distinct prime factors ω(n): 4
Total number of prime factors Ω(n): 7
Sum of prime factors: 21389

Divisors of 221355728

Number of divisors d(n): 40
Complete list of divisors:
1 2 4 8 11 16 22 44 59 88 118 176 236 472 649 944 1298 2596 5192 10384 21317 42634 85268 170536 234487 341072 468974 937948 1257703 1875896 2515406 3751792 5030812 10061624 13834733 20123248 27669466 55338932 110677864 221355728
Sum of all divisors σ(n): 475817760
Sum of proper divisors (its aliquot sum) s(n): 254462032
221355728 is an abundant number, because the sum of its proper divisors (254462032) is greater than itself. Its abundance is 33106304

Bases of 221355728

Binary: 1101001100011001111011010000₂
Hexadecimal: 0xD319ED0
Base-36: 3NSF68

Squares and roots of 221355728

221355728 squared (221355728²) is 48998358318409984
221355728 cubed (221355728³) is 10846067276376497810788352
The square root of 221355728 is 14878.0283640003
The cube root of 221355728 is 604.9185765703

Scales and comparisons

How big is 221355728?

221,355,728 seconds is equal to 7 years, 1 week, 6 days, 23 hours, 42 minutes, 8 seconds.
To count from 1 to 221,355,728 would take you about ten years!

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 221355728 cubic inches would be around 50.4 feet tall.

Recreational maths with 221355728

221355728 backwards is 827553122
The number of decimal digits it has is: 9
The sum of 221355728's digits is 35
More coming soon!

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The information we have on file for 221355728 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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