21071239384

Names of 21071239384

• Cardinal: 21071239384 can be written as Twenty-one billion, seventy-one million, two hundred thirty-nine thousand, three hundred eighty-four.

Scientific notation

• Scientific notation: 2.1071239384 × 10¹⁰

Factors of 21071239384

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 4888

Divisors of 21071239384

• Number of divisors d(n): 64
• Complete list of divisors:
  1 2 4 8 13 26 52 97 104 194 388 487 776 974 1261 1948 2522 3896 4289 5044 6331 8578 10088 12662 17156 25324 34312 47239 50648 55757 94478 111514 188956 223028 377912 416033 446056 614107 832066 1228214 1664132 2088743 2456428 3328264 4177486 4912856 5408429 8354972 10816858 16709944 21633716 27153659 43267432 54307318 108614636 202608071 217229272 405216142 810432284 1620864568 2633904923 5267809846 10535619692 21071239384
• Sum of all divisors σ(n): 43084641600
• Sum of proper divisors (its aliquot sum) s(n): 22013402216
• 21071239384 is an abundant number, because the sum of its proper divisors (22013402216) is greater than itself. Its abundance is 942162832

Bases of 21071239384

• Binary: 10011100111111100011001100011011000₂
• Hexadecimal: 0x4E7F198D8
• Base-36: 9OH9SD4

Squares and roots of 21071239384

• 21071239384 squared (21071239384²) is 443997129177832699456
• 21071239384 cubed (21071239384³) is 9355569794714883916540302575104
• The square root of 21071239384 is 145159.3585822147
• The cube root of 21071239384 is 2762.0404022207

Scales and comparisons

• 21,071,239,384 seconds is equal to 670 years, 2 hours, 3 minutes, 4 seconds.
• To count from 1 to 21,071,239,384 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 21071239384 cubic inches would be around 230.2 feet tall.

Recreational maths with 21071239384

• 21071239384 backwards is 48393217012
• The number of decimal digits it has is: 11
• The sum of 21071239384's digits is 40
• More coming soon!