18621421

18,621,421 is an odd composite number composed of five prime numbers multiplied together.

What does the number 18621421 look like?

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

18621421 is an odd composite number. It is composed of five distinct prime numbers multiplied together. It has a total of forty-eight divisors.

Prime factorization of 18621421:

7² × 13 × 23 × 31 × 41

(7 × 7 × 13 × 23 × 31 × 41)

See below for interesting mathematical facts about the number 18621421 from the Numbermatics database.

Names of 18621421

Cardinal: 18621421 can be written as Eighteen million, six hundred twenty-one thousand, four hundred twenty-one.

Scientific notation

Scientific notation: 1.8621421 × 10⁷

Factors of 18621421

Number of distinct prime factors ω(n): 5
Total number of prime factors Ω(n): 6
Sum of prime factors: 115

Divisors of 18621421

Number of divisors d(n): 48
Complete list of divisors:
1 7 13 23 31 41 49 91 161 217 287 299 403 533 637 713 943 1127 1271 1519 2009 2093 2821 3731 4991 6601 8897 9269 12259 14651 16523 19747 26117 29233 34937 46207 62279 64883 85813 115661 204631 380029 454181 600691 809627 1432417 2660203 18621421
Sum of all divisors σ(n): 25740288
Sum of proper divisors (its aliquot sum) s(n): 7118867
18621421 is a deficient number, because the sum of its proper divisors (7118867) is less than itself. Its deficiency is 11502554

Bases of 18621421

Binary: 1000111000010001111101101₂
Hexadecimal: 0x11C23ED
Base-36: B34DP

Squares and roots of 18621421

18621421 squared (18621421²) is 346757320059241
18621421 cubed (18621421³) is 6457114041654871601461
The square root of 18621421 is 4315.2544536795
The cube root of 18621421 is 265.0559796297

Scales and comparisons

How big is 18621421?

18,621,421 seconds is equal to 30 weeks, 5 days, 12 hours, 37 minutes, 1 second.
To count from 1 to 18,621,421 would take you about forty-six 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 18621421 cubic inches would be around 22.1 feet tall.

Recreational maths with 18621421

18621421 backwards is 12412681
The number of decimal digits it has is: 8
The sum of 18621421's digits is 25
More coming soon!

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The information we have on file for 18621421 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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