21398736978
21,398,736,978 is an even composite number composed of seven prime numbers multiplied together.
21398736978 is an even composite number. It is composed of seven distinct prime numbers multiplied together. It has a total of three hundred eighty-four divisors.
Prime factorization of 21398736978:
2 × 35 × 17 × 29 × 31 × 43 × 67
(2 × 3 × 3 × 3 × 3 × 3 × 17 × 29 × 31 × 43 × 67)See below for interesting mathematical facts about the number 21398736978 from the Numbermatics database.
Names of 21398736978
- Cardinal: 21398736978 can be written as Twenty-one billion, three hundred ninety-eight million, seven hundred thirty-six thousand, nine hundred seventy-eight.
Scientific notation
- Scientific notation: 2.1398736978 × 1010
Factors of 21398736978
Divisors of 21398736978
- Number of divisors d(n): 384
-
Complete list of divisors:
1 2 3 6 9 17 18 27 29 31 34 43 51 54 58 62 67 81 86 87 93 102 129 134 153 162 174 186 201 243 258 261 279 306 387 402 459 486 493 522 527 558 603 731 774 783 837 899 918 986 1054 1139 1161 1206 1247 1333 1377 1462 1479 1566 1581 1674 1798 1809 1943 2077 2193 2278 2322 2349 2494 2511 2666 2697 2754 2881 2958 3162 3417 3483 3618 3741 3886 3999 4131 4154 4386 4437 4698 4743 5022 5394 5427 5762 5829 6231 6579 6834 6966 7047 7482 7533 7998 8091 8262 8643 8874 9486 10251 10449 10854 11223 11658 11997 12462 13158 13311 14094 14229 15066 15283 16182 16281 17286 17487 18693 19737 20502 20898 21199 22446 22661 23994 24273 25929 26622 28458 30566 30753 32562 33031 33669 34974 35309 35991 37386 38657 39474 39933 42398 42687 45322 45849 48546 48977 51858 52461 56079 59211 60233 61506 63597 66062 67338 67983 70618 71982 72819 77314 77787 79866 83549 85374 89311 91698 92259 97954 99093 101007 104922 105927 107973 112158 115971 118422 119799 120466 127194 128061 135966 137547 145638 146931 155574 157383 167098 168237 177633 178622 180699 184518 190791 198186 202014 203949 211854 215946 218457 231942 233361 239598 250647 256122 267933 275094 276777 293862 297279 303021 314766 317781 323919 336474 347913 355266 361398 381582 407898 412641 436914 440793 466722 472149 501294 504711 535866 542097 553554 572373 594558 606042 611847 635562 647838 657169 695826 700083 751941 803799 825282 881586 891837 944298 953343 1009422 1023961 1043739 1084194 1144746 1223694 1237923 1314338 1322379 1400166 1420333 1503882 1518287 1607598 1626291 1717119 1783674 1835541 1906686 1971507 2047922 2087478 2255823 2411397 2475846 2590019 2644758 2675511 2840666 2860029 3036574 3071883 3131217 3252582 3434238 3671082 3713769 3943014 3967137 4260999 4511646 4554861 4822794 4878873 5151357 5180038 5351022 5506623 5720058 5914521 6143766 6262434 6767469 7234191 7427538 7770057 7934274 8026533 8521998 8580087 9109722 9215649 9393651 9757746 10302714 11013246 11829042 11901411 12782997 13534938 13664583 14468382 14636619 15540114 16053066 17160174 17743563 18431298 18787302 20302407 21702573 23310171 23802822 25565994 27329166 27646947 29273238 35487126 38348991 40604814 40993749 43405146 44030323 46620342 53230689 55293894 69930513 76697982 81987498 82940841 88060646 106461378 115046973 122981247 132090969 139861026 159692067 165881682 209791539 230093946 245962494 248822523 264181938 319384134 345140919 368943741 396272907 419583078 497645046 629374617 690281838 737887482 792545814 1188818721 1258749234 2377637442 3566456163 7132912326 10699368489 21398736978
- Sum of all divisors σ(n): 56458321920
- Sum of proper divisors (its aliquot sum) s(n): 35059584942
- 21398736978 is an abundant number, because the sum of its proper divisors (35059584942) is greater than itself. Its abundance is 13660847964
Bases of 21398736978
- Binary: 100111110110111011011010000010100102
- Hexadecimal: 0x4FB76D052
- Base-36: 9TW974I
Squares and roots of 21398736978
- 21398736978 squared (213987369782) is 457905944253624572484
- 21398736978 cubed (213987369783) is 9798608861746042749742812113352
-
The
square root of 21398736978 is 146283.0713992567 -
The
cube root of 21398736978 is 2776.2764780433
Scales and comparisons
How big is 21398736978?- 21,398,736,978 seconds is equal to 680 years, 21 weeks, 3 days, 13 hours, 36 minutes, 18 seconds.
-
To count from 1 to 21,398,736,978 would take you about one thousand, three hundred sixty 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 21398736978 cubic inches would be around 231.4 feet tall.
Recreational maths with 21398736978
- 21398736978 backwards is 87963789312
- The number of decimal digits it has is: 11
- The sum of 21398736978's digits is 63
- More coming soon!
Link to this page
HTML: To link to this page, just copy and paste the link below into your blog, web page or email.
BBCODE: To link to this page in a forum post or comment box, just copy and paste the link code below:
Cite this page
MLA style:
"Number 21398736978 - Facts about the integer". Numbermatics.com. 2024. Web. 14 May 2024.
APA style:
Numbermatics. (2024). Number 21398736978 - Facts about the integer. Retrieved 14 May 2024, from https://numbermatics.com/n/21398736978/
Chicago style:
Numbermatics. 2024. "Number 21398736978 - Facts about the integer". https://numbermatics.com/n/21398736978/
The information we have on file for 21398736978 includes mathematical data and numerical statistics calculated using standard algorithms and methods. We are adding more all the time. If there are any features you would like to see, please contact us. Information provided for educational use, intellectual curiosity and fun!
Keywords: Divisors of 21398736978, math, Factors of 21398736978, curriculum, school, college, exams, university, Prime factorization of 21398736978, STEM, science, technology, engineering, physics, economics, calculator, twenty-one billion, three hundred ninety-eight million, seven hundred thirty-six thousand, nine hundred seventy-eight.