66990720
66,990,720 is an even composite number composed of six prime numbers multiplied together.
66990720 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of two hundred fifty-six divisors.
Prime factorization of 66990720:
27 × 3 × 5 × 23 × 37 × 41
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 3 × 5 × 23 × 37 × 41)See below for interesting mathematical facts about the number 66990720 from the Numbermatics database.
Names of 66990720
- Cardinal: 66990720 can be written as Sixty-six million, nine hundred ninety thousand, seven hundred twenty.
Scientific notation
- Scientific notation: 6.699072 × 107
Factors of 66990720
Divisors of 66990720
- Number of divisors d(n): 256
-
Complete list of divisors:
1 2 3 4 5 6 8 10 12 15 16 20 23 24 30 32 37 40 41 46 48 60 64 69 74 80 82 92 96 111 115 120 123 128 138 148 160 164 184 185 192 205 222 230 240 246 276 296 320 328 345 368 370 384 410 444 460 480 492 552 555 592 615 640 656 690 736 740 820 851 888 920 943 960 984 1104 1110 1184 1230 1312 1380 1472 1480 1517 1640 1702 1776 1840 1886 1920 1968 2208 2220 2368 2460 2553 2624 2760 2829 2944 2960 3034 3280 3404 3552 3680 3772 3936 4255 4416 4440 4551 4715 4736 4920 5106 5248 5520 5658 5920 6068 6560 6808 7104 7360 7544 7585 7872 8510 8832 8880 9102 9430 9840 10212 11040 11316 11840 12136 12765 13120 13616 14145 14208 14720 15088 15170 15744 17020 17760 18204 18860 19680 20424 22080 22632 22755 23680 24272 25530 26240 27232 28290 30176 30340 34040 34891 35520 36408 37720 39360 40848 44160 45264 45510 48544 51060 54464 56580 60352 60680 68080 69782 71040 72816 75440 78720 81696 90528 91020 97088 102120 104673 108928 113160 120704 121360 136160 139564 145632 150880 163392 174455 181056 182040 194176 204240 209346 226320 242720 272320 279128 291264 301760 326784 348910 362112 364080 408480 418692 452640 485440 523365 544640 558256 582528 603520 697820 728160 816960 837384 905280 970880 1046730 1116512 1395640 1456320 1633920 1674768 1810560 2093460 2233024 2791280 2912640 3349536 4186920 4466048 5582560 6699072 8373840 11165120 13398144 16747680 22330240 33495360 66990720
- Sum of all divisors σ(n): 234420480
- Sum of proper divisors (its aliquot sum) s(n): 167429760
- 66990720 is an abundant number, because the sum of its proper divisors (167429760) is greater than itself. Its abundance is 100439040
Bases of 66990720
- Binary: 111111111000110010100000002
- Hexadecimal: 0x3FE3280
- Base-36: 13VUDC
Squares and roots of 66990720
- 66990720 squared (669907202) is 4487756566118400
- 66990720 cubed (669907203) is 300638043548999221248000
-
The
square root of 66990720 is 8184.7858860205 -
The
cube root of 66990720 is 406.1360573549
Scales and comparisons
How big is 66990720?- 66,990,720 seconds is equal to 2 years, 6 weeks, 5 days, 8 hours, 32 minutes.
-
To count from 1 to 66,990,720 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 66990720 cubic inches would be around 33.8 feet tall.
Recreational maths with 66990720
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