20490700840

Names of 20490700840

• Cardinal: 20490700840 can be written as Twenty billion, four hundred ninety million, seven hundred thousand, eight hundred forty.

Scientific notation

• Scientific notation: 2.049070084 × 10¹⁰

Factors of 20490700840

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 1125

Divisors of 20490700840

• Number of divisors d(n): 64
• Complete list of divisors:
  1 2 4 5 8 10 20 40 79 158 316 395 632 790 1039 1580 2078 3160 4156 5195 6241 8312 10390 12482 20780 24964 31205 41560 49928 62410 82081 124820 164162 249640 328324 410405 493039 656648 820810 986078 1641620 1972156 2465195 3283240 3944312 4930390 6484399 9860780 12968798 19721560 25937596 32421995 51875192 64843990 129687980 259375960 512267521 1024535042 2049070084 2561337605 4098140168 5122675210 10245350420 20490700840
• Sum of all divisors σ(n): 46740096000
• Sum of proper divisors (its aliquot sum) s(n): 26249395160
• 20490700840 is an abundant number, because the sum of its proper divisors (26249395160) is greater than itself. Its abundance is 5758694320

Bases of 20490700840

• Binary: 10011000101010101110100100000101000₂
• Hexadecimal: 0x4C5574828
• Base-36: 9EVMTYG

Squares and roots of 20490700840

• 20490700840 squared (20490700840²) is 419868820914376705600
• 20490700840 cubed (20490700840³) is 8603406401400028329514352704000
• The square root of 20490700840 is 143145.7328738795
• The cube root of 20490700840 is 2736.4379467919

Scales and comparisons

• 20,490,700,840 seconds is equal to 651 years, 28 weeks, 21 hours, 20 minutes, 40 seconds.
• To count from 1 to 20,490,700,840 would take you about one thousand, three hundred three 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 20490700840 cubic inches would be around 228 feet tall.

Recreational maths with 20490700840

• 20490700840 backwards is 04800709402
• The number of decimal digits it has is: 11
• The sum of 20490700840's digits is 34
• More coming soon!