21084311988

Names of 21084311988

• Cardinal: 21084311988 can be written as Twenty-one billion, eighty-four million, three hundred eleven thousand, nine hundred eighty-eight.

Scientific notation

• Scientific notation: 2.1084311988 × 10¹⁰

Factors of 21084311988

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 533

Divisors of 21084311988

• Number of divisors d(n): 108
• Complete list of divisors:
  1 2 3 4 6 9 12 18 27 36 54 81 108 162 191 243 324 337 382 486 573 674 764 972 1011 1146 1348 1719 2022 2292 3033 3438 4044 5157 6066 6876 9099 10314 12132 15471 18198 20628 27297 30942 36396 46413 54594 61884 64367 81891 92826 109188 113569 128734 163782 185652 193101 227138 257468 327564 340707 386202 454276 579303 681414 772404 1022121 1158606 1362828 1737909 2044242 2317212 3066363 3475818 4088484 5213727 6132726 6951636 9199089 10427454 12265452 15641181 18398178 20854908 21691679 27597267 31282362 36796356 43383358 55194534 62564724 65075037 86766716 110389068 130150074 195225111 260300148 390450222 585675333 780900444 1171350666 1757025999 2342701332 3514051998 5271077997 7028103996 10542155994 21084311988
• Sum of all divisors σ(n): 55725126912
• Sum of proper divisors (its aliquot sum) s(n): 34640814924
• 21084311988 is an abundant number, because the sum of its proper divisors (34640814924) is greater than itself. Its abundance is 13556502936

Bases of 21084311988

• Binary: 10011101000101110010001000110110100₂
• Hexadecimal: 0x4E8B911B4
• Base-36: 9OP1Z90

Squares and roots of 21084311988

• 21084311988 squared (21084311988²) is 444548212007320512144
• 21084311988 cubed (21084311988³) is 9372993195669913417956038782272
• The square root of 21084311988 is 145204.3800579033
• The cube root of 21084311988 is 2762.6114744039

Scales and comparisons

• 21,084,311,988 seconds is equal to 670 years, 21 weeks, 4 days, 9 hours, 19 minutes, 48 seconds.
• To count from 1 to 21,084,311,988 would take you about one thousand, three hundred forty 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 21084311988 cubic inches would be around 230.2 feet tall.

Recreational maths with 21084311988

• 21084311988 backwards is 88911348012
• The number of decimal digits it has is: 11
• The sum of 21084311988's digits is 45
• More coming soon!