28978040
28,978,040 is an even composite number composed of six prime numbers multiplied together.
28978040 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of one hundred twenty-eight divisors.
Prime factorization of 28978040:
23 × 5 × 7 × 13 × 19 × 419
(2 × 2 × 2 × 5 × 7 × 13 × 19 × 419)See below for interesting mathematical facts about the number 28978040 from the Numbermatics database.
Names of 28978040
- Cardinal: 28978040 can be written as Twenty-eight million, nine hundred seventy-eight thousand and forty.
Scientific notation
- Scientific notation: 2.897804 × 107
Factors of 28978040
Divisors of 28978040
- Number of divisors d(n): 128
-
Complete list of divisors:
1 2 4 5 7 8 10 13 14 19 20 26 28 35 38 40 52 56 65 70 76 91 95 104 130 133 140 152 182 190 247 260 266 280 364 380 419 455 494 520 532 665 728 760 838 910 988 1064 1235 1330 1676 1729 1820 1976 2095 2470 2660 2933 3352 3458 3640 4190 4940 5320 5447 5866 6916 7961 8380 8645 9880 10894 11732 13832 14665 15922 16760 17290 21788 23464 27235 29330 31844 34580 38129 39805 43576 54470 55727 58660 63688 69160 76258 79610 103493 108940 111454 117320 152516 159220 190645 206986 217880 222908 278635 305032 318440 381290 413972 445816 517465 557270 724451 762580 827944 1034930 1114540 1448902 1525160 2069860 2229080 2897804 3622255 4139720 5795608 7244510 14489020 28978040
- Sum of all divisors σ(n): 84672000
- Sum of proper divisors (its aliquot sum) s(n): 55693960
- 28978040 is an abundant number, because the sum of its proper divisors (55693960) is greater than itself. Its abundance is 26715920
Bases of 28978040
- Binary: 11011101000101011011110002
- Hexadecimal: 0x1BA2B78
- Base-36: H93LK
Squares and roots of 28978040
- 28978040 squared (289780402) is 839726802241600
- 28978040 cubed (289780403) is 24333636864429174464000
-
The
square root of 28978040 is 5383.1254861837 -
The
cube root of 28978040 is 307.1541134715
Scales and comparisons
How big is 28978040?- 28,978,040 seconds is equal to 47 weeks, 6 days, 9 hours, 27 minutes, 20 seconds.
-
To count from 1 to 28,978,040 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 28978040 cubic inches would be around 25.6 feet tall.
Recreational maths with 28978040
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The information we have on file for 28978040 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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