16561989

16,561,989 is an odd composite number composed of three prime numbers multiplied together.

What does the number 16561989 look like?

This visualization shows the relationship between its 3 prime factors (large circles) and 20 divisors.

16561989 is an odd composite number. It is composed of three distinct prime numbers multiplied together. It has a total of twenty divisors.

Prime factorization of 16561989:

3⁴ × 139 × 1471

(3 × 3 × 3 × 3 × 139 × 1471)

See below for interesting mathematical facts about the number 16561989 from the Numbermatics database.

Names of 16561989

Cardinal: 16561989 can be written as Sixteen million, five hundred sixty-one thousand, nine hundred eighty-nine.

Scientific notation

Scientific notation: 1.6561989 × 10⁷

Factors of 16561989

Number of distinct prime factors ω(n): 3
Total number of prime factors Ω(n): 6
Sum of prime factors: 1613

Divisors of 16561989

Number of divisors d(n): 20
Complete list of divisors:
1 3 9 27 81 139 417 1251 1471 3753 4413 11259 13239 39717 119151 204469 613407 1840221 5520663 16561989
Sum of all divisors σ(n): 24935680
Sum of proper divisors (its aliquot sum) s(n): 8373691
16561989 is a deficient number, because the sum of its proper divisors (8373691) is less than itself. Its deficiency is 8188298

Bases of 16561989

Binary: 111111001011011101000101₂
Hexadecimal: 0xFCB745
Base-36: 9UZB9

Squares and roots of 16561989

16561989 squared (16561989²) is 274299479636121
16561989 cubed (16561989³) is 4542944964439160004669
The square root of 16561989 is 4069.6423675797
The cube root of 16561989 is 254.9005840835

Scales and comparisons

How big is 16561989?

16,561,989 seconds is equal to 27 weeks, 2 days, 16 hours, 33 minutes, 9 seconds.
To count from 1 to 16,561,989 would take you about forty-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 16561989 cubic inches would be around 21.2 feet tall.

Recreational maths with 16561989

16561989 backwards is 98916561
The number of decimal digits it has is: 8
The sum of 16561989's digits is 45
More coming soon!

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The information we have on file for 16561989 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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