68148990
68,148,990 is an even composite number composed of seven prime numbers multiplied together.
68148990 is an even composite number. It is composed of seven distinct prime numbers multiplied together. It has a total of one hundred ninety-two divisors.
Prime factorization of 68148990:
2 × 32 × 5 × 7 × 13 × 53 × 157
(2 × 3 × 3 × 5 × 7 × 13 × 53 × 157)See below for interesting mathematical facts about the number 68148990 from the Numbermatics database.
Names of 68148990
- Cardinal: 68148990 can be written as Sixty-eight million, one hundred forty-eight thousand, nine hundred ninety.
Scientific notation
- Scientific notation: 6.814899 × 107
Factors of 68148990
Divisors of 68148990
- Number of divisors d(n): 192
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Complete list of divisors:
1 2 3 5 6 7 9 10 13 14 15 18 21 26 30 35 39 42 45 53 63 65 70 78 90 91 105 106 117 126 130 157 159 182 195 210 234 265 273 314 315 318 371 390 455 471 477 530 546 585 630 689 742 785 795 819 910 942 954 1099 1113 1170 1365 1378 1413 1570 1590 1638 1855 2041 2067 2198 2226 2355 2385 2730 2826 3297 3339 3445 3710 4082 4095 4134 4710 4770 4823 5495 5565 6123 6201 6594 6678 6890 7065 8190 8321 9646 9891 10205 10335 10990 11130 12246 12402 14130 14287 14469 16485 16642 16695 18369 19782 20410 20670 24115 24963 28574 28938 30615 31005 32970 33390 36738 41605 42861 43407 48230 49455 49926 58247 61230 62010 71435 72345 74889 83210 85722 86814 91845 98910 108173 116494 124815 128583 142870 144690 149778 174741 183690 214305 216346 217035 249630 257166 291235 324519 349482 374445 428610 434070 524223 540865 582470 642915 649038 748890 757211 873705 973557 1048446 1081730 1285830 1514422 1622595 1747410 1947114 2271633 2621115 3245190 3786055 4543266 4867785 5242230 6814899 7572110 9735570 11358165 13629798 22716330 34074495 68148990
- Sum of all divisors σ(n): 223606656
- Sum of proper divisors (its aliquot sum) s(n): 155457666
- 68148990 is an abundant number, because the sum of its proper divisors (155457666) is greater than itself. Its abundance is 87308676
Bases of 68148990
- Binary: 1000000111111011110111111102
- Hexadecimal: 0x40FDEFE
- Base-36: 14KO3I
Squares and roots of 68148990
- 68148990 squared (681489902) is 4644284838020100
- 68148990 cubed (681489903) is 316503320983383414699000
-
The
square root of 68148990 is 8255.2401539871 -
The
cube root of 68148990 is 408.4633936197
Scales and comparisons
How big is 68148990?- 68,148,990 seconds is equal to 2 years, 8 weeks, 4 days, 18 hours, 16 minutes, 30 seconds.
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To count from 1 to 68,148,990 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 68148990 cubic inches would be around 34 feet tall.
Recreational maths with 68148990
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