8428421

Names of 8428421

• Cardinal: 8428421 can be written as Eight million, four hundred twenty-eight thousand, four hundred twenty-one.

Scientific notation

• Scientific notation: 8.428421 × 10⁶

Factors of 8428421

• Number of distinct prime factors ω(n): 1
• Total number of prime factors Ω(n): 1
• Sum of prime factors: 8428421

Divisors of 8428421

• Number of divisors d(n): 2
• Complete list of divisors:
  1 8428421
• Sum of all divisors σ(n): 8428422
• Sum of proper divisors (its aliquot sum) s(n): 1
• 8428421 is a deficient number, because the sum of its proper divisors (1) is less than itself. Its deficiency is 8428420

Bases of 8428421

• Binary: 100000001001101110000101₂
• Hexadecimal: 0x809B85
• Base-36: 50NET

Squares and roots of 8428421

• 8428421 squared (8428421²) is 71038280553241
• 8428421 cubed (8428421³) is 598740535618828062461
• The square root of 8428421 is 2903.1742972137
• The cube root of 8428421 is 203.5082751939

Scales and comparisons

• 8,428,421 seconds is equal to 13 weeks, 6 days, 13 hours, 13 minutes, 41 seconds.
• To count from 1 to 8,428,421 would take you about twenty 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 8428421 cubic inches would be around 17 feet tall.

Recreational maths with 8428421

• 8428421 backwards is 1248248
• 8428421 is a twin prime! Its twin is 8428423
• The number of decimal digits it has is: 7
• The sum of 8428421's digits is 29
• More coming soon!