20384820729

Names of 20384820729

• Cardinal: 20384820729 can be written as Twenty billion, three hundred eighty-four million, eight hundred twenty thousand, seven hundred twenty-nine.

Scientific notation

• Scientific notation: 2.0384820729 × 10¹⁰

Factors of 20384820729

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 31471

Divisors of 20384820729

• Number of divisors d(n): 72
• Complete list of divisors:
  1 3 7 9 13 21 39 61 63 91 117 169 183 273 427 507 549 793 819 1183 1281 1521 2379 3549 3843 5551 7137 10309 10647 16653 30927 31387 49959 72163 92781 94161 216489 219709 282483 408031 649467 659127 1224093 1914607 1977381 2856217 3672279 5304403 5743821 8568651 13402249 15913209 17231463 24889891 25705953 37130821 40206747 47739627 74669673 111392463 120620241 174229237 224009019 323568583 334177389 522687711 970705749 1568063133 2264980081 2912117247 6794940243 20384820729
• Sum of all divisors σ(n): 37037337792
• Sum of proper divisors (its aliquot sum) s(n): 16652517063
• 20384820729 is a deficient number, because the sum of its proper divisors (16652517063) is less than itself. Its deficiency is 3732303666

Bases of 20384820729

• Binary: 10010111111000001111010110111111001₂
• Hexadecimal: 0x4BF07ADF9
• Base-36: 9D4LGC9

Squares and roots of 20384820729

• 20384820729 squared (20384820729²) is 415540916153468091441
• 20384820729 cubed (20384820729³) is 8470727081352867295646564280489
• The square root of 20384820729 is 142775.4206052289
• The cube root of 20384820729 is 2731.7165395145

Scales and comparisons

• 20,384,820,729 seconds is equal to 648 years, 9 weeks, 10 hours, 12 minutes, 9 seconds.
• To count from 1 to 20,384,820,729 would take you about one thousand, two hundred ninety-six 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 20384820729 cubic inches would be around 227.6 feet tall.

Recreational maths with 20384820729

• 20384820729 backwards is 92702848302
• The number of decimal digits it has is: 11
• The sum of 20384820729's digits is 45
• More coming soon!