21002120790

Names of 21002120790

• Cardinal: 21002120790 can be written as Twenty-one billion, two million, one hundred twenty thousand, seven hundred ninety.

Scientific notation

• Scientific notation: 2.100212079 × 10¹⁰

Factors of 21002120790

• Number of distinct prime factors ω(n): 8
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 345

Divisors of 21002120790

• Number of divisors d(n): 384
• Complete list of divisors:
  1 2 3 5 6 7 10 14 15 17 21 30 34 35 42 49 51 53 70 85 98 101 102 105 106 119 147 157 159 170 202 210 238 245 255 265 294 303 314 318 357 371 471 490 505 510 530 595 606 707 714 735 742 785 795 833 901 942 1010 1099 1113 1190 1414 1470 1515 1570 1590 1666 1717 1785 1802 1855 2121 2198 2226 2355 2499 2597 2669 2703 3030 3297 3434 3535 3570 3710 4165 4242 4505 4710 4949 4998 5151 5194 5338 5353 5406 5495 5565 6307 6594 7070 7693 7791 8007 8321 8330 8585 9010 9898 10302 10605 10706 10990 11130 12019 12495 12614 12985 13345 13515 14847 15386 15582 15857 16014 16059 16485 16642 17170 18683 18921 21210 23079 24038 24745 24963 24990 25755 25970 26690 26765 27030 29694 31535 31714 32118 32970 36057 37366 37471 37842 38465 38955 40035 41605 44149 46158 47571 49490 49926 51510 53530 56049 58247 60095 63070 72114 74235 74942 76930 77910 79285 80070 80295 83210 84133 88298 91001 93415 94605 95142 110999 112098 112413 115395 116494 120190 124815 130781 132447 141457 148470 158570 160590 168266 174741 180285 182002 186830 187355 189210 220745 221998 224826 230790 237855 249630 252399 261562 262297 264894 269569 273003 280245 282914 291235 332997 349482 360570 374710 392343 407729 420665 424371 441490 455005 475710 504798 524594 539138 546006 554995 560490 562065 582470 637007 653905 662235 665994 707285 776993 784686 786891 808707 815458 840421 841330 848742 873705 910010 990199 1109990 1124130 1223187 1261995 1274014 1307810 1311485 1324470 1347845 1365015 1414570 1553986 1573782 1617414 1664985 1680842 1747410 1886983 1911021 1961715 1980398 2038645 2121855 2330979 2446374 2521263 2523990 2622970 2695690 2730030 2970597 3185035 3329970 3773966 3822042 3884965 3923430 3934455 4043535 4077290 4202105 4243710 4459049 4661958 4950995 5042526 5660949 5882947 5941194 6115935 6370070 6931393 7769930 7868910 8087070 8404210 8918098 9434915 9555105 9901990 11321898 11654895 11765894 12231870 12606315 13208881 13377147 13862786 14287157 14852985 17648841 18869830 19110210 20794179 22295245 23309790 25212630 26417762 26754294 28304745 28574314 29414735 29705970 34656965 35297682 39626643 41180629 41588358 42861471 44590490 56609490 58829470 66044405 66885735 69313930 71435785 79253286 82361258 85722942 88244205 100010099 103970895 123541887 132088810 133771470 142871570 176488410 198133215 200020198 205903145 207941790 214307355 247083774 300030297 396266430 411806290 428614710 500050495 600060594 617709435 700070693 1000100990 1235418870 1400141386 1500151485 2100212079 3000302970 3500353465 4200424158 7000706930 10501060395 21002120790
• Sum of all divisors σ(n): 64288142208
• Sum of proper divisors (its aliquot sum) s(n): 43286021418
• 21002120790 is an abundant number, because the sum of its proper divisors (43286021418) is greater than itself. Its abundance is 22283900628

Bases of 21002120790

• Binary: 10011100011110100101110111001010110₂
• Hexadecimal: 0x4E3D2EE56
• Base-36: 9NC4C46

Squares and roots of 21002120790

• 21002120790 squared (21002120790²) is 441089077677750224100
• 21002120790 cubed (21002120790³) is 9263806088537802901997769039000
• The square root of 21002120790 is 144921.0846978451
• The cube root of 21002120790 is 2759.0170478389

Scales and comparisons

• 21,002,120,790 seconds is equal to 667 years, 41 weeks, 5 days, 2 hours, 26 minutes, 30 seconds.
• To count from 1 to 21,002,120,790 would take you about one thousand, three hundred thirty-five 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 21002120790 cubic inches would be around 229.9 feet tall.

Recreational maths with 21002120790

• 21002120790 backwards is 09702120012
• The number of decimal digits it has is: 11
• The sum of 21002120790's digits is 24
• More coming soon!