630

Names of 630

• Cardinal: 630 can be written as Six hundred thirty.

Scientific notation

• Scientific notation: 6.3 × 10²

Factors of 630

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 5
• Sum of prime factors: 17

Divisors of 630

• Number of divisors d(n): 24
• Complete list of divisors:
  1 2 3 5 6 7 9 10 14 15 18 21 30 35 42 45 63 70 90 105 126 210 315 630
• Sum of all divisors σ(n): 1872
• Sum of proper divisors (its aliquot sum) s(n): 1242
• 630 is an abundant number, because the sum of its proper divisors (1242) is greater than itself. Its abundance is 612

Bases of 630

• Binary: 1001110110₂
• Hexadecimal: 0x276
• Base-36: HI

Squares and roots of 630

• 630 squared (630²) is 396900
• 630 cubed (630³) is 250047000
• The square root of 630 is 25.0998007961
• The cube root of 630 is 8.5726188823

Scales and comparisons

• 630 seconds is equal to 10 minutes, 30 seconds.
• To count from 1 to 630 would take you about five minutes.

  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 630 cubic inches would be around 0.7 feet tall.

Recreational maths with 630

• 630 backwards is 036
• 630 is a Harshad number.
• The number of decimal digits it has is: 3
• The sum of 630's digits is 9
• More coming soon!