28129500
28,129,500 is an even composite number composed of six prime numbers multiplied together.
28129500 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of two hundred eighty-eight divisors.
Prime factorization of 28129500:
22 × 32 × 53 × 7 × 19 × 47
(2 × 2 × 3 × 3 × 5 × 5 × 5 × 7 × 19 × 47)See below for interesting mathematical facts about the number 28129500 from the Numbermatics database.
Names of 28129500
- Cardinal: 28129500 can be written as Twenty-eight million, one hundred twenty-nine thousand, five hundred.
Scientific notation
- Scientific notation: 2.81295 × 107
Factors of 28129500
Divisors of 28129500
- Number of divisors d(n): 288
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Complete list of divisors:
1 2 3 4 5 6 7 9 10 12 14 15 18 19 20 21 25 28 30 35 36 38 42 45 47 50 57 60 63 70 75 76 84 90 94 95 100 105 114 125 126 133 140 141 150 171 175 180 188 190 210 225 228 235 250 252 266 282 285 300 315 329 342 350 375 380 399 420 423 450 470 475 500 525 532 564 570 630 658 665 684 700 705 750 798 846 855 875 893 900 940 950 987 1050 1125 1140 1175 1197 1260 1316 1330 1410 1425 1500 1575 1596 1645 1692 1710 1750 1786 1900 1974 1995 2100 2115 2250 2350 2375 2394 2625 2660 2679 2820 2850 2961 3150 3290 3325 3420 3500 3525 3572 3948 3990 4230 4275 4465 4500 4700 4750 4788 4935 5250 5358 5700 5875 5922 5985 6251 6300 6580 6650 7050 7125 7875 7980 8037 8225 8460 8550 8930 9500 9870 9975 10500 10575 10716 11750 11844 11970 12502 13300 13395 14100 14250 14805 15750 16074 16450 16625 17100 17625 17860 18753 19740 19950 21150 21375 22325 23500 23940 24675 25004 26790 28500 29610 29925 31255 31500 32148 32900 33250 35250 37506 39900 40185 41125 42300 42750 44650 49350 49875 52875 53580 56259 59220 59850 62510 66500 66975 70500 74025 75012 80370 82250 85500 89300 93765 98700 99750 105750 111625 112518 119700 123375 125020 133950 148050 149625 156275 160740 164500 187530 199500 200925 211500 223250 225036 246750 267900 281295 296100 299250 312550 334875 370125 375060 401850 446500 468825 493500 562590 598500 625100 669750 740250 781375 803700 937650 1004625 1125180 1339500 1406475 1480500 1562750 1875300 2009250 2344125 2812950 3125500 4018500 4688250 5625900 7032375 9376500 14064750 28129500
- Sum of all divisors σ(n): 109025280
- Sum of proper divisors (its aliquot sum) s(n): 80895780
- 28129500 is an abundant number, because the sum of its proper divisors (80895780) is greater than itself. Its abundance is 52766280
Bases of 28129500
- Binary: 11010110100111000110111002
- Hexadecimal: 0x1AD38DC
- Base-36: GQWV0
Squares and roots of 28129500
- 28129500 squared (281295002) is 791268770250000
- 28129500 cubed (281295003) is 22257994872747375000000
-
The
square root of 28129500 is 5303.7251059987 -
The
cube root of 28129500 is 304.1263181191
Scales and comparisons
How big is 28129500?- 28,129,500 seconds is equal to 46 weeks, 3 days, 13 hours, 45 minutes.
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To count from 1 to 28,129,500 would take you about seventeen 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 28129500 cubic inches would be around 25.3 feet tall.
Recreational maths with 28129500
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