21358307646

Names of 21358307646

• Cardinal: 21358307646 can be written as Twenty-one billion, three hundred fifty-eight million, three hundred seven thousand, six hundred forty-six.

Scientific notation

• Scientific notation: 2.1358307646 × 10¹⁰

Factors of 21358307646

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 254

Divisors of 21358307646

• Number of divisors d(n): 288
• Complete list of divisors:
  1 2 3 6 9 13 17 18 26 31 34 37 39 51 62 74 78 93 102 111 117 151 153 186 221 222 234 279 302 306 333 403 442 453 481 527 558 629 663 666 806 906 961 962 1054 1147 1209 1258 1326 1359 1443 1581 1887 1922 1963 1989 2294 2418 2567 2718 2883 2886 3162 3441 3627 3774 3926 3978 4329 4681 4743 5134 5587 5661 5766 5889 6851 6882 7254 7701 8177 8649 8658 9362 9486 10323 11174 11322 11778 12493 13702 14043 14911 15402 16337 16354 16761 17298 17667 19499 20553 20646 23103 24531 24986 28086 29822 32674 33371 33522 35334 35557 37479 38998 41106 42129 44733 46206 49011 49062 50283 58497 60853 61659 66742 71114 72631 73593 74958 79577 84258 89466 94979 98022 100113 100566 106671 112437 116994 121706 123318 134199 145111 145262 147033 147186 159154 173197 175491 182559 189958 200226 212381 213342 217893 224874 238731 253487 268398 284937 290222 294066 300339 320013 346394 350982 365118 424762 435333 435786 462241 477462 506974 519591 547677 569874 600678 604469 637143 640026 653679 716193 760461 854811 870666 924482 1034501 1039182 1095354 1208938 1234727 1274286 1305999 1307358 1386723 1432386 1520922 1558773 1709622 1813407 1886443 1911429 2069002 2251561 2281383 2466887 2469454 2611998 2773446 2944349 3103503 3117546 3626814 3704181 3772886 3822858 4160169 4503122 4562766 4933774 5369107 5440221 5659329 5888698 6207006 6754683 7400661 7408362 7858097 8320338 8833047 9310509 10738214 10880442 11112543 11318658 13509366 14801322 15716194 16107321 16977987 17666094 18621018 20264049 22201983 22225086 23574291 26499141 32069531 32214642 33955974 38276537 40528098 44403966 47148582 48321963 52998282 64139062 69798391 70722873 76553074 91274819 96208593 96643926 114829611 139596782 141445746 182549638 192417186 209395173 229659222 273824457 288625779 344488833 418790346 547648914 577251558 628185519 688977666 821473371 1186572647 1256371038 1642946742 2373145294 3559717941 7119435882 10679153823 21358307646
• Sum of all divisors σ(n): 56369162304
• Sum of proper divisors (its aliquot sum) s(n): 35010854658
• 21358307646 is an abundant number, because the sum of its proper divisors (35010854658) is greater than itself. Its abundance is 13652547012

Bases of 21358307646

• Binary: 10011111001000011011110100100111110₂
• Hexadecimal: 0x4F90DE93E
• Base-36: 9T86NNI

Squares and roots of 21358307646

• 21358307646 squared (21358307646²) is 456177305501182061316
• 21358307646 cubed (21358307646³) is 9743175232017574682243563622136
• The square root of 21358307646 is 146144.8173764639
• The cube root of 21358307646 is 2774.5269391807

Scales and comparisons

• 21,358,307,646 seconds is equal to 679 years, 6 weeks, 4 days, 15 hours, 14 minutes, 6 seconds.
• To count from 1 to 21,358,307,646 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 21358307646 cubic inches would be around 231.2 feet tall.

Recreational maths with 21358307646

• 21358307646 backwards is 64670385312
• The number of decimal digits it has is: 11
• The sum of 21358307646's digits is 45
• More coming soon!