21039342012

Names of 21039342012

• Cardinal: 21039342012 can be written as Twenty-one billion, thirty-nine million, three hundred forty-two thousand and twelve.

Scientific notation

• Scientific notation: 2.1039342012 × 10¹⁰

Factors of 21039342012

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 8630

Divisors of 21039342012

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 3 4 6 9 12 13 18 26 31 36 39 52 62 78 93 117 124 156 169 186 234 279 338 372 403 468 507 558 676 806 1014 1116 1209 1521 1612 2028 2197 2418 3042 3627 4394 4836 5239 6084 6591 7254 8581 8788 10478 13182 14508 15717 17162 19773 20956 25743 26364 31434 34324 39546 47151 51486 62868 68107 77229 79092 94302 102972 111553 136214 154458 188604 204321 223106 266011 272428 308916 334659 408642 446212 532022 612963 669318 798033 817284 1003977 1064044 1225926 1338636 1450189 1596066 2007954 2394099 2451852 2900378 3192132 3458143 4015908 4350567 4788198 5800756 6916286 8701134 9576396 10374429 13051701 13832572 17402268 18852457 20748858 26103402 31123287 37704914 41497716 44955859 52206804 56557371 62246574 75409828 89911718 113114742 124493148 134867577 169672113 179823436 226229484 269735154 339344226 404602731 539470308 584426167 678688452 809205462 1168852334 1618410924 1753278501 2337704668 3506557002 5259835503 7013114004 10519671006 21039342012
• Sum of all divisors σ(n): 59478065920
• Sum of proper divisors (its aliquot sum) s(n): 38438723908
• 21039342012 is an abundant number, because the sum of its proper divisors (38438723908) is greater than itself. Its abundance is 17399381896

Bases of 21039342012

• Binary: 10011100110000010101110000110111100₂
• Hexadecimal: 0x4E60AE1BC
• Base-36: 9NYA470

Squares and roots of 21039342012

• 21039342012 squared (21039342012²) is 442653912297908208144
• 21039342012 cubed (21039342012³) is 9313147053785543623323699745728
• The square root of 21039342012 is 145049.4467828125
• The cube root of 21039342012 is 2760.6459845847

Scales and comparisons

• 21,039,342,012 seconds is equal to 668 years, 51 weeks, 1 day, 21 hours, 40 minutes, 12 seconds.
• To count from 1 to 21,039,342,012 would take you about one thousand, three hundred thirty-seven 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 21039342012 cubic inches would be around 230.1 feet tall.

Recreational maths with 21039342012

• 21039342012 backwards is 21024393012
• The number of decimal digits it has is: 11
• The sum of 21039342012's digits is 27
• More coming soon!