81364500
81,364,500 is an even composite number composed of five prime numbers multiplied together.
81364500 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of three hundred sixty divisors.
Prime factorization of 81364500:
22 × 34 × 53 × 72 × 41
(2 × 2 × 3 × 3 × 3 × 3 × 5 × 5 × 5 × 7 × 7 × 41)See below for interesting mathematical facts about the number 81364500 from the Numbermatics database.
Names of 81364500
- Cardinal: 81364500 can be written as Eighty-one million, three hundred sixty-four thousand, five hundred.
Scientific notation
- Scientific notation: 8.13645 × 107
Factors of 81364500
Divisors of 81364500
- Number of divisors d(n): 360
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Complete list of divisors:
1 2 3 4 5 6 7 9 10 12 14 15 18 20 21 25 27 28 30 35 36 41 42 45 49 50 54 60 63 70 75 81 82 84 90 98 100 105 108 123 125 126 135 140 147 150 162 164 175 180 189 196 205 210 225 245 246 250 252 270 287 294 300 315 324 350 369 375 378 405 410 420 441 450 490 492 500 525 540 567 574 588 615 630 675 700 735 738 750 756 810 820 861 875 882 900 945 980 1025 1050 1107 1125 1134 1148 1225 1230 1260 1323 1350 1435 1470 1476 1500 1575 1620 1722 1750 1764 1845 1890 2009 2025 2050 2100 2205 2214 2250 2268 2450 2460 2583 2625 2646 2700 2835 2870 2940 3075 3150 3321 3375 3444 3500 3675 3690 3780 3969 4018 4050 4100 4305 4410 4428 4500 4725 4900 5125 5166 5250 5292 5535 5670 5740 6027 6125 6150 6300 6615 6642 6750 7175 7350 7380 7749 7875 7938 8036 8100 8610 8820 9225 9450 10045 10125 10250 10332 10500 11025 11070 11340 12054 12250 12300 12915 13230 13284 13500 14175 14350 14700 15375 15498 15750 15876 16605 17220 18081 18375 18450 18900 19845 20090 20250 20500 21525 22050 22140 23247 23625 24108 24500 25830 26460 27675 28350 28700 30135 30750 30996 31500 33075 33210 35875 36162 36750 36900 38745 39690 40180 40500 43050 44100 46125 46494 47250 50225 51660 54243 55125 55350 56700 60270 61500 64575 66150 66420 70875 71750 72324 73500 77490 79380 83025 86100 90405 92250 92988 94500 99225 100450 107625 108486 110250 110700 116235 120540 129150 132300 138375 141750 143500 150675 154980 162729 165375 166050 180810 184500 193725 198450 200900 215250 216972 220500 232470 251125 258300 271215 276750 283500 301350 322875 325458 330750 332100 361620 387450 396900 415125 430500 452025 464940 496125 502250 542430 553500 581175 602700 645750 650916 661500 753375 774900 813645 830250 904050 968625 992250 1004500 1084860 1162350 1291500 1356075 1506750 1627290 1660500 1808100 1937250 1984500 2260125 2324700 2712150 2905875 3013500 3254580 3874500 4068225 4520250 5424300 5811750 6780375 8136450 9040500 11623500 13560750 16272900 20341125 27121500 40682250 81364500
- Sum of all divisors σ(n): 316324008
- Sum of proper divisors (its aliquot sum) s(n): 234959508
- 81364500 is an abundant number, because the sum of its proper divisors (234959508) is greater than itself. Its abundance is 153595008
Bases of 81364500
- Binary: 1001101100110000110000101002
- Hexadecimal: 0x4D98614
- Base-36: 1CFX90
Squares and roots of 81364500
- 81364500 squared (813645002) is 6620181860250000
- 81364500 cubed (813645003) is 538647786968311125000000
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The
square root of 81364500 is 9020.2272698641 -
The
cube root of 81364500 is 433.3229123069
Scales and comparisons
How big is 81364500?- 81,364,500 seconds is equal to 2 years, 30 weeks, 3 days, 17 hours, 15 minutes.
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To count from 1 to 81,364,500 would take you about three years!
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 81364500 cubic inches would be around 36.1 feet tall.
Recreational maths with 81364500
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