66138800
66,138,800 is an even composite number composed of six prime numbers multiplied together.
66138800 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of two hundred forty divisors.
Prime factorization of 66138800:
24 × 52 × 7 × 13 × 23 × 79
(2 × 2 × 2 × 2 × 5 × 5 × 7 × 13 × 23 × 79)See below for interesting mathematical facts about the number 66138800 from the Numbermatics database.
Names of 66138800
- Cardinal: 66138800 can be written as Sixty-six million, one hundred thirty-eight thousand, eight hundred.
Scientific notation
- Scientific notation: 6.61388 × 107
Factors of 66138800
Divisors of 66138800
- Number of divisors d(n): 240
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Complete list of divisors:
1 2 4 5 7 8 10 13 14 16 20 23 25 26 28 35 40 46 50 52 56 65 70 79 80 91 92 100 104 112 115 130 140 158 161 175 182 184 200 208 230 260 280 299 316 322 325 350 364 368 395 400 455 460 520 553 560 575 598 632 644 650 700 728 790 805 910 920 1027 1040 1106 1150 1196 1264 1288 1300 1400 1456 1495 1580 1610 1817 1820 1840 1975 2054 2093 2212 2275 2300 2392 2576 2600 2765 2800 2990 3160 3220 3634 3640 3950 4025 4108 4186 4424 4550 4600 4784 5135 5200 5530 5980 6320 6440 7189 7268 7280 7475 7900 8050 8216 8372 8848 9085 9100 9200 10270 10465 11060 11960 12719 12880 13825 14378 14536 14950 15800 16100 16432 16744 18170 18200 20540 20930 22120 23621 23920 25438 25675 27650 28756 29072 29900 31600 32200 33488 35945 36340 36400 41080 41860 44240 45425 47242 50876 51350 52325 55300 57512 59800 63595 64400 71890 72680 82160 83720 90850 94484 101752 102700 104650 110600 115024 118105 119600 127190 143780 145360 165347 167440 179725 181700 188968 203504 205400 209300 221200 236210 254380 287560 317975 330694 359450 363400 377936 410800 418600 472420 508760 575120 590525 635950 661388 718900 726800 826735 837200 944840 1017520 1181050 1271900 1322776 1437800 1653470 1889680 2362100 2543800 2645552 2875600 3306940 4133675 4724200 5087600 6613880 8267350 9448400 13227760 16534700 33069400 66138800
- Sum of all divisors σ(n): 206653440
- Sum of proper divisors (its aliquot sum) s(n): 140514640
- 66138800 is an abundant number, because the sum of its proper divisors (140514640) is greater than itself. Its abundance is 74375840
Bases of 66138800
- Binary: 111111000100110010101100002
- Hexadecimal: 0x3F132B0
- Base-36: 13DL0W
Squares and roots of 66138800
- 66138800 squared (661388002) is 4374340865440000
- 66138800 cubed (661388003) is 289313655631163072000000
-
The
square root of 66138800 is 8132.5764675163 -
The
cube root of 66138800 is 404.4070987087
Scales and comparisons
How big is 66138800?- 66,138,800 seconds is equal to 2 years, 5 weeks, 2 days, 11 hours, 53 minutes, 20 seconds.
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To count from 1 to 66,138,800 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 66138800 cubic inches would be around 33.7 feet tall.
Recreational maths with 66138800
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