21294317856

Names of 21294317856

• Cardinal: 21294317856 can be written as Twenty-one billion, two hundred ninety-four million, three hundred seventeen thousand, eight hundred fifty-six.

Scientific notation

• Scientific notation: 2.1294317856 × 10¹⁰

Factors of 21294317856

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 31687985

Divisors of 21294317856

• Number of divisors d(n): 48
• Complete list of divisors:
  1 2 3 4 6 7 8 12 14 16 21 24 28 32 42 48 56 84 96 112 168 224 336 672 31687973 63375946 95063919 126751892 190127838 221815811 253503784 380255676 443631622 507007568 665447433 760511352 887263244 1014015136 1330894866 1521022704 1774526488 2661789732 3042045408 3549052976 5323579464 7098105952 10647158928 21294317856
• Sum of all divisors σ(n): 63882955584
• Sum of proper divisors (its aliquot sum) s(n): 42588637728
• 21294317856 is an abundant number, because the sum of its proper divisors (42588637728) is greater than itself. Its abundance is 21294319872

Bases of 21294317856

• Binary: 10011110101001111011000000100100000₂
• Hexadecimal: 0x4F53D8120
• Base-36: 9S634TC

Squares and roots of 21294317856

• 21294317856 squared (21294317856²) is 453447972952360436736
• 21294317856 cubed (21294317856³) is 9655865267206453885335363158016
• The square root of 21294317856 is 145925.7271902389
• The cube root of 21294317856 is 2771.7533268331

Scales and comparisons

• 21,294,317,856 seconds is equal to 677 years, 4 weeks, 6 days, 17 minutes, 36 seconds.
• To count from 1 to 21,294,317,856 would take you about one thousand, three hundred fifty-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 21294317856 cubic inches would be around 231 feet tall.

Recreational maths with 21294317856

• 21294317856 backwards is 65871349212
• 21294317856 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21294317856's digits is 48
• More coming soon!