28974390
28,974,390 is an even composite number composed of six prime numbers multiplied together.
28974390 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of sixty-four divisors.
Prime factorization of 28974390:
2 × 3 × 5 × 61 × 71 × 223
See below for interesting mathematical facts about the number 28974390 from the Numbermatics database.
Names of 28974390
- Cardinal: 28974390 can be written as Twenty-eight million, nine hundred seventy-four thousand, three hundred ninety.
Scientific notation
- Scientific notation: 2.897439 × 107
Factors of 28974390
Divisors of 28974390
- Number of divisors d(n): 64
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Complete list of divisors:
1 2 3 5 6 10 15 30 61 71 122 142 183 213 223 305 355 366 426 446 610 669 710 915 1065 1115 1338 1830 2130 2230 3345 4331 6690 8662 12993 13603 15833 21655 25986 27206 31666 40809 43310 47499 64965 68015 79165 81618 94998 129930 136030 158330 204045 237495 408090 474990 965813 1931626 2897439 4829065 5794878 9658130 14487195 28974390
- Sum of all divisors σ(n): 71995392
- Sum of proper divisors (its aliquot sum) s(n): 43021002
- 28974390 is an abundant number, because the sum of its proper divisors (43021002) is greater than itself. Its abundance is 14046612
Bases of 28974390
- Binary: 11011101000011101001101102
- Hexadecimal: 0x1BA1D36
- Base-36: H90S6
Squares and roots of 28974390
- 28974390 squared (289743902) is 839515275872100
- 28974390 cubed (289743903) is 24324443014075815519000
-
The
square root of 28974390 is 5382.7864531301 -
The
cube root of 28974390 is 307.1412168137
Scales and comparisons
How big is 28974390?- 28,974,390 seconds is equal to 47 weeks, 6 days, 8 hours, 26 minutes, 30 seconds.
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To count from 1 to 28,974,390 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 28974390 cubic inches would be around 25.6 feet tall.
Recreational maths with 28974390
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The information we have on file for 28974390 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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