28867640

28,867,640 is an even composite number composed of four prime numbers multiplied together.

What does the number 28867640 look like?

This visualization shows the relationship between its 4 prime factors (large circles) and 32 divisors.

28867640 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of thirty-two divisors.

Prime factorization of 28867640:

2³ × 5 × 61 × 11831

(2 × 2 × 2 × 5 × 61 × 11831)

See below for interesting mathematical facts about the number 28867640 from the Numbermatics database.

Names of 28867640

Cardinal: 28867640 can be written as Twenty-eight million, eight hundred sixty-seven thousand, six hundred forty.

Scientific notation

Scientific notation: 2.886764 × 10⁷

Factors of 28867640

Number of distinct prime factors ω(n): 4
Total number of prime factors Ω(n): 6
Sum of prime factors: 11899

Divisors of 28867640

Number of divisors d(n): 32
Complete list of divisors:
1 2 4 5 8 10 20 40 61 122 244 305 488 610 1220 2440 11831 23662 47324 59155 94648 118310 236620 473240 721691 1443382 2886764 3608455 5773528 7216910 14433820 28867640
Sum of all divisors σ(n): 66022560
Sum of proper divisors (its aliquot sum) s(n): 37154920
28867640 is an abundant number, because the sum of its proper divisors (37154920) is greater than itself. Its abundance is 8287280

Bases of 28867640

Binary: 1101110000111110000111000₂
Hexadecimal: 0x1B87C38
Base-36: H6QEW

Squares and roots of 28867640

28867640 squared (28867640²) is 833340639169600
28867640 cubed (28867640³) is 24056577568917911744000
The square root of 28867640 is 5372.8614350269
The cube root of 28867640 is 306.7635537177

Scales and comparisons

How big is 28867640?

28,867,640 seconds is equal to 47 weeks, 5 days, 2 hours, 47 minutes, 20 seconds.
To count from 1 to 28,867,640 would take you about nineteen 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 28867640 cubic inches would be around 25.6 feet tall.

Recreational maths with 28867640

28867640 backwards is 04676882
The number of decimal digits it has is: 8
The sum of 28867640's digits is 41
More coming soon!

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The information we have on file for 28867640 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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