21408210

21,408,210 is an even composite number composed of five prime numbers multiplied together.

What does the number 21408210 look like?

This visualization shows the relationship between its 5 prime factors (large circles) and 48 divisors.

21408210 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of forty-eight divisors.

Prime factorization of 21408210:

2 × 3² × 5 × 79 × 3011

(2 × 3 × 3 × 5 × 79 × 3011)

See below for interesting mathematical facts about the number 21408210 from the Numbermatics database.

Names of 21408210

Cardinal: 21408210 can be written as Twenty-one million, four hundred eight thousand, two hundred ten.

Scientific notation

Scientific notation: 2.140821 × 10⁷

Factors of 21408210

Number of distinct prime factors ω(n): 5
Total number of prime factors Ω(n): 6
Sum of prime factors: 3100

Divisors of 21408210

Number of divisors d(n): 48
Complete list of divisors:
1 2 3 5 6 9 10 15 18 30 45 79 90 158 237 395 474 711 790 1185 1422 2370 3011 3555 6022 7110 9033 15055 18066 27099 30110 45165 54198 90330 135495 237869 270990 475738 713607 1189345 1427214 2140821 2378690 3568035 4281642 7136070 10704105 21408210
Sum of all divisors σ(n): 56384640
Sum of proper divisors (its aliquot sum) s(n): 34976430
21408210 is an abundant number, because the sum of its proper divisors (34976430) is greater than itself. Its abundance is 13568220

Bases of 21408210

Binary: 1010001101010100111010010₂
Hexadecimal: 0x146A9D2
Base-36: CQUOI

Squares and roots of 21408210

21408210 squared (21408210²) is 458311455404100
21408210 cubed (21408210³) is 9811627882696607661000
The square root of 21408210 is 4626.9006905271
The cube root of 21408210 is 277.6686094871

Scales and comparisons

How big is 21408210?

21,408,210 seconds is equal to 35 weeks, 2 days, 18 hours, 43 minutes, 30 seconds.
To count from 1 to 21,408,210 would take you about sixteen 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 21408210 cubic inches would be around 23.1 feet tall.

Recreational maths with 21408210

21408210 backwards is 01280412
21408210 is a Harshad number.
The number of decimal digits it has is: 8
The sum of 21408210's digits is 18
More coming soon!

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The information we have on file for 21408210 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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