644490242

Names of 644490242

• Cardinal: 644490242 can be written as Six hundred forty-four million, four hundred ninety thousand, two hundred forty-two.

Scientific notation

• Scientific notation: 6.44490242 × 10⁸

Factors of 644490242

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 29295024

Divisors of 644490242

• Number of divisors d(n): 8
• Complete list of divisors:
  1 2 11 22 29295011 58590022 322245121 644490242
• Sum of all divisors σ(n): 1054620432
• Sum of proper divisors (its aliquot sum) s(n): 410130190
• 644490242 is a deficient number, because the sum of its proper divisors (410130190) is less than itself. Its deficiency is 234360052

Bases of 644490242

• Binary: 100110011010100010010000000010₂
• Hexadecimal: 0x266A2402
• Base-36: ANPNUQ

Squares and roots of 644490242

• 644490242 squared (644490242²) is 415367672033218564
• 644490242 cubed (644490242³) is 267700411467665664351252488
• The square root of 644490242 is 25386.8123639027
• The cube root of 644490242 is 863.7845836773

Scales and comparisons

• 644,490,242 seconds is equal to 20 years, 25 weeks, 4 days, 9 hours, 4 minutes, 2 seconds.
• To count from 1 to 644,490,242 would take you about thirty years!

  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 644490242 cubic inches would be around 72 feet tall.

Recreational maths with 644490242

• 644490242 backwards is 242094446
• The number of decimal digits it has is: 9
• The sum of 644490242's digits is 35
• More coming soon!