28878213

28,878,213 is an odd composite number composed of five prime numbers multiplied together.

What does the number 28878213 look like?

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

28878213 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 28878213:

3 × 7 × 13² × 79 × 103

(3 × 7 × 13 × 13 × 79 × 103)

See below for interesting mathematical facts about the number 28878213 from the Numbermatics database.

Names of 28878213

Cardinal: 28878213 can be written as Twenty-eight million, eight hundred seventy-eight thousand, two hundred thirteen.

Scientific notation

Scientific notation: 2.8878213 × 10⁷

Factors of 28878213

Number of distinct prime factors ω(n): 5
Total number of prime factors Ω(n): 6
Sum of prime factors: 205

Divisors of 28878213

Number of divisors d(n): 48
Complete list of divisors:
1 3 7 13 21 39 79 91 103 169 237 273 309 507 553 721 1027 1183 1339 1659 2163 3081 3549 4017 7189 8137 9373 13351 17407 21567 24411 28119 40053 52221 56959 93457 105781 121849 170877 280371 317343 365547 740467 1375153 2221401 4125459 9626071 28878213
Sum of all divisors σ(n): 48721920
Sum of proper divisors (its aliquot sum) s(n): 19843707
28878213 is a deficient number, because the sum of its proper divisors (19843707) is less than itself. Its deficiency is 9034506

Bases of 28878213

Binary: 1101110001010010110000101₂
Hexadecimal: 0x1B8A585
Base-36: H6YKL

Squares and roots of 28878213

28878213 squared (28878213²) is 833951186073369
28878213 cubed (28878213³) is 24083019983029383609597
The square root of 28878213 is 5373.8452713117
The cube root of 28878213 is 306.8010006671

Scales and comparisons

How big is 28878213?

28,878,213 seconds is equal to 47 weeks, 5 days, 5 hours, 43 minutes, 33 seconds.
To count from 1 to 28,878,213 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 28878213 cubic inches would be around 25.6 feet tall.

Recreational maths with 28878213

28878213 backwards is 31287882
28878213 is a Harshad number.
The number of decimal digits it has is: 8
The sum of 28878213's digits is 39
More coming soon!

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The information we have on file for 28878213 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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