138923820
138,923,820 is an even composite number composed of six prime numbers multiplied together.
138923820 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of two hundred sixteen divisors.
Prime factorization of 138923820:
22 × 32 × 5 × 72 × 19 × 829
(2 × 2 × 3 × 3 × 5 × 7 × 7 × 19 × 829)See below for interesting mathematical facts about the number 138923820 from the Numbermatics database.
Names of 138923820
- Cardinal: 138923820 can be written as One hundred thirty-eight million, nine hundred twenty-three thousand, eight hundred twenty.
Scientific notation
- Scientific notation: 1.3892382 × 108
Factors of 138923820
Divisors of 138923820
- Number of divisors d(n): 216
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Complete list of divisors:
1 2 3 4 5 6 7 9 10 12 14 15 18 19 20 21 28 30 35 36 38 42 45 49 57 60 63 70 76 84 90 95 98 105 114 126 133 140 147 171 180 190 196 210 228 245 252 266 285 294 315 342 380 399 420 441 490 532 570 588 630 665 684 735 798 829 855 882 931 980 1140 1197 1260 1330 1470 1596 1658 1710 1764 1862 1995 2205 2394 2487 2660 2793 2940 3316 3420 3724 3990 4145 4410 4655 4788 4974 5586 5803 5985 7461 7980 8290 8379 8820 9310 9948 11172 11606 11970 12435 13965 14922 15751 16580 16758 17409 18620 23212 23940 24870 27930 29015 29844 31502 33516 34818 37305 40621 41895 47253 49740 52227 55860 58030 63004 69636 74610 78755 81242 83790 87045 94506 104454 110257 116060 121863 141759 149220 157510 162484 167580 174090 189012 203105 208908 220514 236265 243726 261135 283518 315020 330771 348180 365589 406210 441028 472530 487452 522270 551285 567036 609315 661542 708795 731178 771799 812420 945060 992313 1044540 1102570 1218630 1323084 1417590 1462356 1543598 1653855 1827945 1984626 2205140 2315397 2437260 2835180 3087196 3307710 3655890 3858995 3969252 4630794 4961565 6615420 6946191 7311780 7717990 9261588 9923130 11576985 13892382 15435980 19846260 23153970 27784764 34730955 46307940 69461910 138923820
- Sum of all divisors σ(n): 516625200
- Sum of proper divisors (its aliquot sum) s(n): 377701380
- 138923820 is an abundant number, because the sum of its proper divisors (377701380) is greater than itself. Its abundance is 238777560
Bases of 138923820
- Binary: 10000100011111001111001011002
- Hexadecimal: 0x847CF2C
- Base-36: 2APMB0
Squares and roots of 138923820
- 138923820 squared (1389238202) is 19299827763392400
- 138923820 cubed (1389238203) is 2681205798232528366968000
-
The
square root of 138923820 is 11786.5949281375 -
The
cube root of 138923820 is 517.9154963199
Scales and comparisons
How big is 138923820?- 138,923,820 seconds is equal to 4 years, 21 weeks, 4 days, 21 hours, 57 minutes.
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To count from 1 to 138,923,820 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 138923820 cubic inches would be around 43.2 feet tall.
Recreational maths with 138923820
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