138991490
138,991,490 is an even composite number composed of six prime numbers multiplied together.
138991490 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of ninety-six divisors.
Prime factorization of 138991490:
2 × 5 × 112 × 17 × 29 × 233
(2 × 5 × 11 × 11 × 17 × 29 × 233)See below for interesting mathematical facts about the number 138991490 from the Numbermatics database.
Names of 138991490
- Cardinal: 138991490 can be written as One hundred thirty-eight million, nine hundred ninety-one thousand, four hundred ninety.
Scientific notation
- Scientific notation: 1.3899149 × 108
Factors of 138991490
Divisors of 138991490
- Number of divisors d(n): 96
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Complete list of divisors:
1 2 5 10 11 17 22 29 34 55 58 85 110 121 145 170 187 233 242 290 319 374 466 493 605 638 935 986 1165 1210 1595 1870 2057 2330 2465 2563 3190 3509 3961 4114 4930 5126 5423 6757 7018 7922 10285 10846 12815 13514 17545 19805 20570 25630 27115 28193 33785 35090 39610 43571 54230 56386 59653 67570 74327 87142 114869 119306 140965 148654 217855 229738 281930 298265 371635 435710 479281 574345 596530 743270 817597 958562 1148690 1263559 1635194 2396405 2527118 4087985 4792810 6317795 8175970 12635590 13899149 27798298 69495745 138991490
- Sum of all divisors σ(n): 302505840
- Sum of proper divisors (its aliquot sum) s(n): 163514350
- 138991490 is an abundant number, because the sum of its proper divisors (163514350) is greater than itself. Its abundance is 24522860
Bases of 138991490
- Binary: 10000100100011010111100000102
- Hexadecimal: 0x848D782
- Base-36: 2AR2IQ
Squares and roots of 138991490
- 138991490 squared (1389914902) is 19318634292420100
- 138991490 cubed (1389914903) is 2685125765068565404949000
-
The
square root of 138991490 is 11789.4652126381 -
The
cube root of 138991490 is 517.9995751401
Scales and comparisons
How big is 138991490?- 138,991,490 seconds is equal to 4 years, 21 weeks, 5 days, 16 hours, 44 minutes, 50 seconds.
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To count from 1 to 138,991,490 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 138991490 cubic inches would be around 43.2 feet tall.
Recreational maths with 138991490
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