20500000

Names of 20500000

• Cardinal: 20500000 can be written as Twenty million, five hundred thousand.

Scientific notation

• Scientific notation: 2.05 × 10⁷

Factors of 20500000

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 48

Divisors of 20500000

• Number of divisors d(n): 84
• Complete list of divisors:
  1 2 4 5 8 10 16 20 25 32 40 41 50 80 82 100 125 160 164 200 205 250 328 400 410 500 625 656 800 820 1000 1025 1250 1312 1640 2000 2050 2500 3125 3280 4000 4100 5000 5125 6250 6560 8200 10000 10250 12500 15625 16400 20000 20500 25000 25625 31250 32800 41000 50000 51250 62500 82000 100000 102500 125000 128125 164000 205000 250000 256250 410000 500000 512500 640625 820000 1025000 1281250 2050000 2562500 4100000 5125000 10250000 20500000
• Sum of all divisors σ(n): 51679026
• Sum of proper divisors (its aliquot sum) s(n): 31179026
• 20500000 is an abundant number, because the sum of its proper divisors (31179026) is greater than itself. Its abundance is 10679026

Bases of 20500000

• Binary: 1001110001100111000100000₂
• Hexadecimal: 0x138CE20
• Base-36: C7DWG

Squares and roots of 20500000

• 20500000 squared (20500000²) is 420250000000000
• 20500000 cubed (20500000³) is 8615125000000000000000
• The square root of 20500000 is 4527.6925690687
• The cube root of 20500000 is 273.6851837399

Scales and comparisons

• 20,500,000 seconds is equal to 33 weeks, 6 days, 6 hours, 26 minutes, 40 seconds.
• To count from 1 to 20,500,000 would take you about fifty weeks!

  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 20500000 cubic inches would be around 22.8 feet tall.

Recreational maths with 20500000

• 20500000 backwards is 00000502
• The number of decimal digits it has is: 8
• The sum of 20500000's digits is 7
• More coming soon!