28997020
28,997,020 is an even composite number composed of five prime numbers multiplied together.
28997020 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of seventy-two divisors.
Prime factorization of 28997020:
22 × 5 × 132 × 23 × 373
(2 × 2 × 5 × 13 × 13 × 23 × 373)See below for interesting mathematical facts about the number 28997020 from the Numbermatics database.
Names of 28997020
- Cardinal: 28997020 can be written as Twenty-eight million, nine hundred ninety-seven thousand and twenty.
Scientific notation
- Scientific notation: 2.899702 × 107
Factors of 28997020
Divisors of 28997020
- Number of divisors d(n): 72
-
Complete list of divisors:
1 2 4 5 10 13 20 23 26 46 52 65 92 115 130 169 230 260 299 338 373 460 598 676 746 845 1196 1492 1495 1690 1865 2990 3380 3730 3887 4849 5980 7460 7774 8579 9698 15548 17158 19396 19435 24245 34316 38870 42895 48490 63037 77740 85790 96980 111527 126074 171580 223054 252148 315185 446108 557635 630370 1115270 1260740 1449851 2230540 2899702 5799404 7249255 14498510 28997020
- Sum of all divisors σ(n): 68989536
- Sum of proper divisors (its aliquot sum) s(n): 39992516
- 28997020 is an abundant number, because the sum of its proper divisors (39992516) is greater than itself. Its abundance is 10995496
Bases of 28997020
- Binary: 11011101001110101100111002
- Hexadecimal: 0x1BA759C
- Base-36: H9I8S
Squares and roots of 28997020
- 28997020 squared (289970202) is 840827168880400
- 28997020 cubed (289970203) is 24381482232568336408000
-
The
square root of 28997020 is 5384.8881139723 -
The
cube root of 28997020 is 307.2211586401
Scales and comparisons
How big is 28997020?- 28,997,020 seconds is equal to 47 weeks, 6 days, 14 hours, 43 minutes, 40 seconds.
-
To count from 1 to 28,997,020 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 28997020 cubic inches would be around 25.6 feet tall.
Recreational maths with 28997020
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