138998790
138,998,790 is an even composite number composed of six prime numbers multiplied together.
138998790 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of one hundred forty-four divisors.
Prime factorization of 138998790:
2 × 32 × 5 × 72 × 43 × 733
(2 × 3 × 3 × 5 × 7 × 7 × 43 × 733)See below for interesting mathematical facts about the number 138998790 from the Numbermatics database.
Names of 138998790
- Cardinal: 138998790 can be written as One hundred thirty-eight million, nine hundred ninety-eight thousand, seven hundred ninety.
Scientific notation
- Scientific notation: 1.3899879 × 108
Factors of 138998790
Divisors of 138998790
- Number of divisors d(n): 144
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Complete list of divisors:
1 2 3 5 6 7 9 10 14 15 18 21 30 35 42 43 45 49 63 70 86 90 98 105 126 129 147 210 215 245 258 294 301 315 387 430 441 490 602 630 645 733 735 774 882 903 1290 1466 1470 1505 1806 1935 2107 2199 2205 2709 3010 3665 3870 4214 4398 4410 4515 5131 5418 6321 6597 7330 9030 10262 10535 10995 12642 13194 13545 15393 18963 21070 21990 25655 27090 30786 31519 31605 32985 35917 37926 46179 51310 63038 63210 65970 71834 76965 92358 94557 94815 107751 153930 157595 179585 189114 189630 215502 220633 230895 283671 315190 323253 359170 441266 461790 472785 538755 567342 646506 661899 945570 1077510 1103165 1323798 1418355 1544431 1616265 1985697 2206330 2836710 3088862 3232530 3309495 3971394 4633293 6618990 7722155 9266586 9928485 13899879 15444310 19856970 23166465 27799758 46332930 69499395 138998790
- Sum of all divisors σ(n): 430764048
- Sum of proper divisors (its aliquot sum) s(n): 291765258
- 138998790 is an abundant number, because the sum of its proper divisors (291765258) is greater than itself. Its abundance is 152766468
Bases of 138998790
- Binary: 10000100100011110100000001102
- Hexadecimal: 0x848F406
- Base-36: 2AR85I
Squares and roots of 138998790
- 138998790 squared (1389987902) is 19320663621464100
- 138998790 cubed (1389987903) is 2685548865380527928439000
-
The
square root of 138998790 is 11789.7748070097 -
The
cube root of 138998790 is 518.0086436349
Scales and comparisons
How big is 138998790?- 138,998,790 seconds is equal to 4 years, 21 weeks, 5 days, 18 hours, 46 minutes, 30 seconds.
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To count from 1 to 138,998,790 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 138998790 cubic inches would be around 43.2 feet tall.
Recreational maths with 138998790
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