28909728
28,909,728 is an even composite number composed of four prime numbers multiplied together.
What does the number 28909728 look like?
This visualization shows the relationship between its 4 prime factors (large circles) and 72 divisors.
28909728 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of seventy-two divisors.
Prime factorization of 28909728:
25 × 32 × 37 × 2713
(2 × 2 × 2 × 2 × 2 × 3 × 3 × 37 × 2713)See below for interesting mathematical facts about the number 28909728 from the Numbermatics database.
Names of 28909728
- Cardinal: 28909728 can be written as Twenty-eight million, nine hundred nine thousand, seven hundred twenty-eight.
Scientific notation
- Scientific notation: 2.8909728 × 107
Factors of 28909728
Divisors of 28909728
- Number of divisors d(n): 72
-
Complete list of divisors:
1 2 3 4 6 8 9 12 16 18 24 32 36 37 48 72 74 96 111 144 148 222 288 296 333 444 592 666 888 1184 1332 1776 2664 2713 3552 5328 5426 8139 10656 10852 16278 21704 24417 32556 43408 48834 65112 86816 97668 100381 130224 195336 200762 260448 301143 390672 401524 602286 781344 803048 903429 1204572 1606096 1806858 2409144 3212192 3613716 4818288 7227432 9636576 14454864 28909728
- Sum of all divisors σ(n): 84465108
- Sum of proper divisors (its aliquot sum) s(n): 55555380
- 28909728 is an abundant number, because the sum of its proper divisors (55555380) is greater than itself. Its abundance is 26645652
Bases of 28909728
- Binary: 11011100100100000101000002
- Hexadecimal: 0x1B920A0
- Base-36: H7MW0
Squares and roots of 28909728
- 28909728 squared (289097282) is 835772373033984
- 28909728 cubed (289097283) is 24161951974327012196352
-
The
square root of 28909728 is 5376.7767296029 -
The
cube root of 28909728 is 306.9125648007
Scales and comparisons
How big is 28909728?- 28,909,728 seconds is equal to 47 weeks, 5 days, 14 hours, 28 minutes, 48 seconds.
-
To count from 1 to 28,909,728 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 28909728 cubic inches would be around 25.6 feet tall.
Recreational maths with 28909728
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The information we have on file for 28909728 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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