145239920
145,239,920 is an even composite number composed of five prime numbers multiplied together.
145239920 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of one hundred sixty divisors.
Prime factorization of 145239920:
24 × 5 × 73 × 67 × 79
(2 × 2 × 2 × 2 × 5 × 7 × 7 × 7 × 67 × 79)See below for interesting mathematical facts about the number 145239920 from the Numbermatics database.
Names of 145239920
- Cardinal: 145239920 can be written as One hundred forty-five million, two hundred thirty-nine thousand, nine hundred twenty.
Scientific notation
- Scientific notation: 1.4523992 × 108
Factors of 145239920
Divisors of 145239920
- Number of divisors d(n): 160
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Complete list of divisors:
1 2 4 5 7 8 10 14 16 20 28 35 40 49 56 67 70 79 80 98 112 134 140 158 196 245 268 280 316 335 343 392 395 469 490 536 553 560 632 670 686 784 790 938 980 1072 1106 1264 1340 1372 1580 1715 1876 1960 2212 2345 2680 2744 2765 3160 3283 3430 3752 3871 3920 4424 4690 5293 5360 5488 5530 6320 6566 6860 7504 7742 8848 9380 10586 11060 13132 13720 15484 16415 18760 19355 21172 22120 22981 26264 26465 27097 27440 30968 32830 37051 37520 38710 42344 44240 45962 52528 52930 54194 61936 65660 74102 77420 84688 91924 105860 108388 114905 131320 135485 148204 154840 183848 185255 211720 216776 229810 259357 262640 270970 296408 309680 367696 370510 423440 433552 459620 518714 541940 592816 741020 919240 1037428 1083880 1296785 1482040 1815499 1838480 2074856 2167760 2593570 2964080 3630998 4149712 5187140 7261996 9077495 10374280 14523992 18154990 20748560 29047984 36309980 72619960 145239920
- Sum of all divisors σ(n): 404736000
- Sum of proper divisors (its aliquot sum) s(n): 259496080
- 145239920 is an abundant number, because the sum of its proper divisors (259496080) is greater than itself. Its abundance is 114256160
Bases of 145239920
- Binary: 10001010100000101111011100002
- Hexadecimal: 0x8A82F70
- Base-36: 2EGZU8
Squares and roots of 145239920
- 145239920 squared (1452399202) is 21094634361606400
- 145239920 cubed (1452399203) is 3063783007108964607488000
-
The
square root of 145239920 is 12051.5525970723 -
The
cube root of 145239920 is 525.6483840899
Scales and comparisons
How big is 145239920?- 145,239,920 seconds is equal to 4 years, 32 weeks, 1 day, 25 minutes, 20 seconds.
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To count from 1 to 145,239,920 would take you about six 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 145239920 cubic inches would be around 43.8 feet tall.
Recreational maths with 145239920
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