18420935442
18,420,935,442 is an even composite number composed of six prime numbers multiplied together.
18420935442 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of two hundred eighty-eight divisors.
Prime factorization of 18420935442:
2 × 3 × 72 × 133 × 192 × 79
(2 × 3 × 7 × 7 × 13 × 13 × 13 × 19 × 19 × 79)See below for interesting mathematical facts about the number 18420935442 from the Numbermatics database.
Names of 18420935442
- Cardinal: 18420935442 can be written as Eighteen billion, four hundred twenty million, nine hundred thirty-five thousand, four hundred forty-two.
Scientific notation
- Scientific notation: 1.8420935442 × 1010
Factors of 18420935442
Divisors of 18420935442
- Number of divisors d(n): 288
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Complete list of divisors:
1 2 3 6 7 13 14 19 21 26 38 39 42 49 57 78 79 91 98 114 133 147 158 169 182 237 247 266 273 294 338 361 399 474 494 507 546 553 637 722 741 798 931 1014 1027 1083 1106 1183 1274 1482 1501 1659 1729 1862 1911 2054 2166 2197 2366 2527 2793 3002 3081 3211 3318 3458 3549 3822 3871 4394 4503 4693 5054 5187 5586 6162 6422 6591 7098 7189 7581 7742 8281 9006 9386 9633 10374 10507 11613 12103 13182 13351 14079 14378 15162 15379 16562 17689 19266 19513 21014 21567 22477 23226 24206 24843 26702 28158 28519 30758 31521 32851 35378 36309 39026 40053 41743 43134 44954 46137 49686 50323 53067 57038 58539 61009 63042 65702 67431 72618 73549 80106 83486 85557 92274 93457 98553 100646 106134 107653 117078 122018 125229 134862 136591 147098 150969 157339 171114 173563 183027 186914 197106 199633 215306 220647 229957 250458 253669 273182 280371 292201 301938 314678 322959 347126 366054 370747 399266 409773 427063 441294 459914 472017 507338 520689 560742 584402 598899 645918 654199 689871 741494 761007 793117 819546 854126 876603 944034 956137 1041378 1112241 1197798 1214941 1281189 1308398 1379742 1397431 1522014 1586234 1753206 1775683 1912274 1962597 2045407 2224482 2379351 2429882 2562378 2595229 2794862 2868411 2989441 3297697 3551366 3644823 3925194 4090814 4192293 4758702 4819711 5190458 5327049 5551819 5736822 5978882 6136221 6595394 7289646 7785687 8384586 8504587 8968323 9639422 9893091 10654098 11103638 12272442 12429781 14459133 15571374 16655457 17009174 17936646 18166603 19786182 23083879 24859562 25513761 28918266 33310914 33737977 36333206 37289343 38862733 46167758 51027522 54499809 62656243 67475954 69251637 74578686 77725466 101213931 108999618 116588199 125312486 138503274 161587153 187968729 202427862 233176398 236165839 323174306 375937458 438593701 472331678 484761459 708497517 877187402 969522918 1315781103 1416995034 2631562206 3070155907 6140311814 9210467721 18420935442
- Sum of all divisors σ(n): 49619001600
- Sum of proper divisors (its aliquot sum) s(n): 31198066158
- 18420935442 is an abundant number, because the sum of its proper divisors (31198066158) is greater than itself. Its abundance is 12777130716
Bases of 18420935442
- Binary: 100010010011111100100101011000100102
- Hexadecimal: 0x449F92B12
- Base-36: 8GNCKR6
Squares and roots of 18420935442
- 18420935442 squared (184209354422) is 339330862558331735364
- 18420935442 cubed (184209354423) is 6250791912665203856360072370888
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The
square root of 18420935442 is 135723.7467873621 -
The
cube root of 18420935442 is 2641.0131289999
Scales and comparisons
How big is 18420935442?- 18,420,935,442 seconds is equal to 585 years, 37 weeks, 6 days, 6 hours, 30 minutes, 42 seconds.
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To count from 1 to 18,420,935,442 would take you about one thousand, one hundred seventy-one 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 18420935442 cubic inches would be around 220.1 feet tall.
Recreational maths with 18420935442
- 18420935442 backwards is 24453902481
- 18420935442 is a
Harshad number . - The number of decimal digits it has is: 11
- The sum of 18420935442's digits is 42
- More coming soon!
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