28478400
28,478,400 is an even composite number composed of five prime numbers multiplied together.
28478400 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of one hundred sixty-eight divisors.
Prime factorization of 28478400:
26 × 3 × 52 × 17 × 349
(2 × 2 × 2 × 2 × 2 × 2 × 3 × 5 × 5 × 17 × 349)See below for interesting mathematical facts about the number 28478400 from the Numbermatics database.
Names of 28478400
- Cardinal: 28478400 can be written as Twenty-eight million, four hundred seventy-eight thousand, four hundred.
Scientific notation
- Scientific notation: 2.84784 × 107
Factors of 28478400
Divisors of 28478400
- Number of divisors d(n): 168
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Complete list of divisors:
1 2 3 4 5 6 8 10 12 15 16 17 20 24 25 30 32 34 40 48 50 51 60 64 68 75 80 85 96 100 102 120 136 150 160 170 192 200 204 240 255 272 300 320 340 349 400 408 425 480 510 544 600 680 698 800 816 850 960 1020 1047 1088 1200 1275 1360 1396 1600 1632 1700 1745 2040 2094 2400 2550 2720 2792 3264 3400 3490 4080 4188 4800 5100 5235 5440 5584 5933 6800 6980 8160 8376 8725 10200 10470 11168 11866 13600 13960 16320 16752 17450 17799 20400 20940 22336 23732 26175 27200 27920 29665 33504 34900 35598 40800 41880 47464 52350 55840 59330 67008 69800 71196 81600 83760 88995 94928 104700 111680 118660 139600 142392 148325 167520 177990 189856 209400 237320 279200 284784 296650 335040 355980 379712 418800 444975 474640 558400 569568 593300 711960 837600 889950 949280 1139136 1186600 1423920 1675200 1779900 1898560 2373200 2847840 3559800 4746400 5695680 7119600 9492800 14239200 28478400
- Sum of all divisors σ(n): 99212400
- Sum of proper divisors (its aliquot sum) s(n): 70734000
- 28478400 is an abundant number, because the sum of its proper divisors (70734000) is greater than itself. Its abundance is 42255600
Bases of 28478400
- Binary: 11011001010001011110000002
- Hexadecimal: 0x1B28BC0
- Base-36: GYE2O
Squares and roots of 28478400
- 28478400 squared (284784002) is 811019266560000
- 28478400 cubed (284784003) is 23096531080802304000000
-
The
square root of 28478400 is 5336.5157172073 -
The
cube root of 28478400 is 305.3785499461
Scales and comparisons
How big is 28478400?- 28,478,400 seconds is equal to 47 weeks, 14 hours, 40 minutes.
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To count from 1 to 28,478,400 would take you about eighteen 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 28478400 cubic inches would be around 25.4 feet tall.
Recreational maths with 28478400
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