20438430

Names of 20438430

• Cardinal: 20438430 can be written as Twenty million, four hundred thirty-eight thousand, four hundred thirty.

Scientific notation

• Scientific notation: 2.043843 × 10⁷

Factors of 20438430

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 5
• Sum of prime factors: 18460

Divisors of 20438430

• Number of divisors d(n): 32
• Complete list of divisors:
  1 2 3 5 6 10 15 30 37 74 111 185 222 370 555 1110 18413 36826 55239 92065 110478 184130 276195 552390 681281 1362562 2043843 3406405 4087686 6812810 10219215 20438430
• Sum of all divisors σ(n): 50380704
• Sum of proper divisors (its aliquot sum) s(n): 29942274
• 20438430 is an abundant number, because the sum of its proper divisors (29942274) is greater than itself. Its abundance is 9503844

Bases of 20438430

• Binary: 1001101111101110110011110₂
• Hexadecimal: 0x137DD9E
• Base-36: C62E6

Squares and roots of 20438430

• 20438430 squared (20438430²) is 417729420864900
• 20438430 cubed (20438430³) is 8537733527287798107000
• The square root of 20438430 is 4520.8881870713
• The cube root of 20438430 is 273.4109122773

Scales and comparisons

• 20,438,430 seconds is equal to 33 weeks, 5 days, 13 hours, 20 minutes, 30 seconds.
• To count from 1 to 20,438,430 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 20438430 cubic inches would be around 22.8 feet tall.

Recreational maths with 20438430

• 20438430 backwards is 03483402
• The number of decimal digits it has is: 8
• The sum of 20438430's digits is 24
• More coming soon!