21143128384

Names of 21143128384

• Cardinal: 21143128384 can be written as Twenty-one billion, one hundred forty-three million, one hundred twenty-eight thousand, three hundred eighty-four.

Scientific notation

• Scientific notation: 2.1143128384 × 10¹⁰

Factors of 21143128384

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 383

Divisors of 21143128384

• Number of divisors d(n): 126
• Complete list of divisors:
  1 2 4 7 8 14 16 28 32 49 56 64 98 112 181 193 196 224 362 386 392 448 724 772 784 1267 1351 1448 1544 1568 2534 2702 2896 3088 3136 5068 5404 5792 6176 8869 9457 10136 10808 11584 12352 17738 18914 20272 21616 34933 35476 37249 37828 40544 43232 69866 70952 74498 75656 81088 86464 139732 141904 148996 151312 244531 260743 279464 283808 297992 302624 489062 521486 558928 567616 595984 605248 978124 1042972 1117856 1191968 1711717 1825201 1956248 2085944 2235712 2383936 3423434 3650402 3912496 4171888 6742069 6846868 7300804 7824992 8343776 13484138 13693736 14601608 15649984 16687552 26968276 27387472 29203216 47194483 53936552 54774944 58406432 94388966 107873104 109549888 116812864 188777932 215746208 330361381 377555864 431492416 660722762 755111728 1321445524 1510223456 2642891048 3020446912 5285782096 10571564192 21143128384
• Sum of all divisors σ(n): 49331077614
• Sum of proper divisors (its aliquot sum) s(n): 28187949230
• 21143128384 is an abundant number, because the sum of its proper divisors (28187949230) is greater than itself. Its abundance is 7044820846

Bases of 21143128384

• Binary: 10011101100001110101000100101000000₂
• Hexadecimal: 0x4EC3A8940
• Base-36: 9PO2M9S

Squares and roots of 21143128384

• 21143128384 squared (21143128384²) is 447031877862306451456
• 21143128384 cubed (21143128384³) is 9451652385383352777485671727104
• The square root of 21143128384 is 145406.7687007727
• The cube root of 21143128384 is 2765.1779322551

Scales and comparisons

• 21,143,128,384 seconds is equal to 672 years, 14 weeks, 6 days, 3 hours, 13 minutes, 4 seconds.
• To count from 1 to 21,143,128,384 would take you about one thousand, three hundred forty-four 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 21143128384 cubic inches would be around 230.4 feet tall.

Recreational maths with 21143128384

• 21143128384 backwards is 48382134112
• The number of decimal digits it has is: 11
• The sum of 21143128384's digits is 37
• More coming soon!