21684947648

Names of 21684947648

• Cardinal: 21684947648 can be written as Twenty-one billion, six hundred eighty-four million, nine hundred forty-seven thousand, six hundred forty-eight.

Scientific notation

• Scientific notation: 2.1684947648 × 10¹⁰

Factors of 21684947648

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 531933

Divisors of 21684947648

• Number of divisors d(n): 84
• Complete list of divisors:
  1 2 4 7 8 13 14 16 26 28 32 49 52 56 64 91 98 104 112 182 196 208 224 364 392 416 448 637 728 784 832 1274 1456 1568 2548 2912 3136 5096 5824 10192 20384 40768 531911 1063822 2127644 3723377 4255288 6914843 7446754 8510576 13829686 14893508 17021152 26063639 27659372 29787016 34042304 48403901 52127278 55318744 59574032 96807802 104254556 110637488 119148064 193615604 208509112 221274976 238296128 338827307 387231208 417018224 442549952 677654614 774462416 834036448 1355309228 1548924832 1668072896 2710618456 3097849664 5421236912 10842473824 21684947648
• Sum of all divisors σ(n): 53907153552
• Sum of proper divisors (its aliquot sum) s(n): 32222205904
• 21684947648 is an abundant number, because the sum of its proper divisors (32222205904) is greater than itself. Its abundance is 10537258256

Bases of 21684947648

• Binary: 10100001100100001100000101011000000₂
• Hexadecimal: 0x50C860AC0
• Base-36: 9YMNOOW

Squares and roots of 21684947648

• 21684947648 squared (21684947648²) is 470236954496500731904
• 21684947648 cubed (21684947648³) is 10197063740411576570531923361792
• The square root of 21684947648 is 147258.0987518173
• The cube root of 21684947648 is 2788.5993769755

Scales and comparisons

• 21,684,947,648 seconds is equal to 689 years, 26 weeks, 5 days, 4 hours, 34 minutes, 8 seconds.
• To count from 1 to 21,684,947,648 would take you about one thousand, three hundred seventy-nine 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 21684947648 cubic inches would be around 232.4 feet tall.

Recreational maths with 21684947648

• 21684947648 backwards is 84674948612
• The number of decimal digits it has is: 11
• The sum of 21684947648's digits is 59
• More coming soon!