8428

Names of 8428

• Cardinal: 8428 can be written as Eight thousand, four hundred twenty-eight.

Scientific notation

• Scientific notation: 8.428 × 10³

Factors of 8428

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 5
• Sum of prime factors: 52

Divisors of 8428

• Number of divisors d(n): 18
• Complete list of divisors:
  1 2 4 7 14 28 43 49 86 98 172 196 301 602 1204 2107 4214 8428
• Sum of all divisors σ(n): 17556
• Sum of proper divisors (its aliquot sum) s(n): 9128
• 8428 is an abundant number, because the sum of its proper divisors (9128) is greater than itself. Its abundance is 700

Bases of 8428

• Binary: 10000011101100₂
• Hexadecimal: 0x20EC
• Base-36: 6I4

Squares and roots of 8428

• 8428 squared (8428²) is 71031184
• 8428 cubed (8428³) is 598650818752
• The square root of 8428 is 91.8041393403
• The cube root of 8428 is 20.3504886723

Scales and comparisons

• 8,428 seconds is equal to 2 hours, 20 minutes, 28 seconds.
• To count from 1 to 8,428 would take you about two hours.

  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 8428 cubic inches would be around 1.7 feet tall.

Recreational maths with 8428

• 8428 backwards is 8248
• The number of decimal digits it has is: 4
• The sum of 8428's digits is 22
• More coming soon!