21359812656

Names of 21359812656

• Cardinal: 21359812656 can be written as Twenty-one billion, three hundred fifty-nine million, eight hundred twelve thousand, six hundred fifty-six.

Scientific notation

• Scientific notation: 2.1359812656 × 10¹⁰

Factors of 21359812656

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 180

Divisors of 21359812656

• Number of divisors d(n): 720
• Complete list of divisors:
  1 2 3 4 6 7 8 12 13 14 16 17 21 24 26 28 29 34 39 42 48 49 51 52 56 58 68 78 84 87 91 98 102 104 109 112 116 119 136 147 156 168 169 174 182 196 203 204 208 218 221 232 238 272 273 294 312 327 336 338 348 357 364 377 392 406 408 436 442 464 476 493 507 546 588 609 624 637 654 663 676 696 714 728 754 763 784 812 816 833 872 884 952 986 1014 1092 1131 1176 1183 1218 1274 1308 1326 1352 1392 1417 1421 1428 1456 1479 1508 1526 1547 1624 1666 1744 1768 1853 1904 1911 1972 2028 2184 2262 2289 2352 2366 2436 2499 2548 2616 2639 2652 2704 2834 2842 2856 2873 2958 3016 3052 3094 3161 3248 3332 3451 3536 3549 3706 3822 3944 4056 4251 4263 4368 4524 4578 4641 4732 4872 4901 4998 5096 5232 5278 5304 5341 5559 5668 5684 5712 5746 5916 6032 6104 6188 6322 6409 6664 6902 7098 7412 7644 7888 7917 8112 8281 8502 8526 8619 9048 9156 9282 9464 9483 9744 9802 9919 9996 10192 10353 10556 10608 10682 10829 11118 11336 11368 11492 11832 12208 12376 12644 12818 12971 13328 13804 14196 14703 14824 15288 15834 16023 16562 17004 17052 17238 18096 18312 18421 18473 18564 18928 18966 19227 19604 19838 19992 20111 20706 21112 21364 21658 22127 22236 22672 22736 22984 23664 24089 24157 24752 24843 25288 25636 25942 27608 28392 29406 29648 29757 30576 31668 32046 32487 33124 34008 34104 34307 34476 36624 36842 36946 37128 37932 38454 38913 39208 39676 39984 40222 41093 41412 42224 42728 43316 44254 44472 44863 45968 48178 48314 49686 50576 51272 51884 53737 55216 55263 55419 56784 58812 59514 60333 63336 64092 64974 66248 66381 68016 68208 68614 68952 69433 72267 72471 73684 73892 74256 75864 76908 77826 78416 79352 80444 82186 82824 83317 85456 86632 88508 88944 89726 90797 96356 96628 99372 102544 102921 103768 107474 110526 110838 117624 119028 120666 123279 126672 128184 128947 129948 132496 132762 134589 137228 137904 138866 140777 144534 144942 147368 147784 151728 153816 154889 155652 158704 160888 161211 164372 165648 166634 168623 173264 177016 179452 181594 192712 193256 198744 205842 207536 208299 214948 221052 221676 235248 238056 240149 241332 246558 249951 256368 257894 259896 265524 269178 272391 274456 277732 281554 287651 289068 289884 294736 295568 307632 309778 311304 313157 314041 321776 322422 328744 333268 337246 354032 358904 363188 376159 385424 386512 386841 397488 411684 416598 422331 429896 442104 443352 464667 476112 480298 482664 493116 499902 505869 515788 519792 531048 534209 538356 544782 548912 555464 563108 575302 578136 579768 583219 619556 622608 626314 628082 644844 657488 666536 674492 698581 717808 720447 726376 752318 773682 823368 833196 844662 859792 862953 884208 886704 902629 929334 939471 942123 960596 965328 986232 999804 1011738 1031576 1062096 1068418 1076712 1089564 1110928 1126216 1128477 1150604 1156272 1159536 1166438 1180361 1239112 1252628 1256164 1289688 1333072 1348984 1397162 1440894 1452752 1504636 1547364 1602627 1646736 1666392 1689324 1725906 1749657 1805258 1858668 1878942 1884246 1921192 1972464 1999608 2013557 2023476 2063152 2095743 2136836 2153424 2179128 2192099 2252432 2256954 2301208 2332876 2360722 2478224 2505256 2512328 2579376 2633113 2697968 2707887 2794324 2881788 3009272 3094728 3205254 3332784 3378648 3451812 3499314 3541083 3610516 3717336 3739463 3757884 3768492 3842384 3999216 4027114 4046952 4082533 4191486 4273672 4358256 4384198 4513908 4602416 4665752 4721444 4890067 5010512 5024656 5266226 5415774 5588648 5763576 6018544 6040671 6189456 6410508 6576297 6757296 6903624 6998628 7082166 7221032 7434672 7478926 7515768 7536984 7899339 8054228 8093904 8165066 8382972 8547344 8768396 9027816 9081553 9331504 9442888 9780134 10532452 10831548 11177296 11218389 11527152 12081342 12247599 12821016 13152594 13807248 13997256 14164332 14442064 14670201 14957852 15031536 15073968 15344693 15798678 16108456 16330132 16765944 17536792 18055632 18163106 18885776 19560268 21064904 21663096 22436778 24162684 24495198 25642032 26176241 26305188 27244659 27994512 28328664 29340402 29915704 30689386 31597356 32216912 32660264 33531888 34230469 35073584 36326212 39120536 42129808 43326192 44873556 46034079 48325368 48990396 52352482 52610376 54489318 56657328 58680804 59831408 61378772 63194712 63570871 65320528 68460938 72652424 78241072 78528723 89747112 92068158 96650736 97980792 102691407 104704964 105220752 108978636 117361608 122757544 126389424 127141742 136921876 145304848 157057446 179494224 184136316 190712613 195961584 205382814 209409928 217957272 234723216 245515088 254283484 273843752 314114892 368272632 381425226 410765628 418819856 435914544 444996097 508566968 547687504 628229784 736545264 762850452 821531256 889992194 1017133936 1256459568 1334988291 1525700904 1643062512 1779984388 2669976582 3051401808 3559968776 5339953164 7119937552 10679906328 21359812656
• Sum of all divisors σ(n): 76830573600
• Sum of proper divisors (its aliquot sum) s(n): 55470760944
• 21359812656 is an abundant number, because the sum of its proper divisors (55470760944) is greater than itself. Its abundance is 34110948288

Bases of 21359812656

• Binary: 10011111001001001001110000000110000₂
• Hexadecimal: 0x4F924E030
• Base-36: 9T92WXC

Squares and roots of 21359812656

• 21359812656 squared (21359812656²) is 456241596699417774336
• 21359812656 cubed (21359812656³) is 9745235031373871604093444796416
• The square root of 21359812656 is 146149.9663222677
• The cube root of 21359812656 is 2774.5921065273

Scales and comparisons

• 21,359,812,656 seconds is equal to 679 years, 9 weeks, 1 day, 1 hour, 17 minutes, 36 seconds.
• To count from 1 to 21,359,812,656 would take you about one thousand, three hundred fifty-eight 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 21359812656 cubic inches would be around 231.2 feet tall.

Recreational maths with 21359812656

• 21359812656 backwards is 65621895312
• 21359812656 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21359812656's digits is 48
• More coming soon!