1225638220

Names of 1225638220

• Cardinal: 1225638220 can be written as One billion, two hundred twenty-five million, six hundred thirty-eight thousand, two hundred twenty.

Scientific notation

• Scientific notation: 1.22563822 × 10⁹

Factors of 1225638220

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 4
• Sum of prime factors: 61281918

Divisors of 1225638220

• Number of divisors d(n): 12
• Complete list of divisors:
  1 2 4 5 10 20 61281911 122563822 245127644 306409555 612819110 1225638220
• Sum of all divisors σ(n): 2573840304
• Sum of proper divisors (its aliquot sum) s(n): 1348202084
• 1225638220 is an abundant number, because the sum of its proper divisors (1348202084) is greater than itself. Its abundance is 122563864

Bases of 1225638220

• Binary: 1001001000011011100000101001100₂
• Hexadecimal: 0x490DC14C
• Base-36: K9POI4

Squares and roots of 1225638220

• 1225638220 squared (1225638220²) is 1502189046324768400
• 1225638220 cubed (1225638220³) is 1841140308840986683688248000
• The square root of 1225638220 is 35009.1162413449
• The cube root of 1225638220 is 1070.1732680073

Scales and comparisons

• 1,225,638,220 seconds is equal to 38 years, 50 weeks, 3 days, 15 hours, 3 minutes, 40 seconds.
• To count from 1 to 1,225,638,220 would take you about seventy-seven 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 1225638220 cubic inches would be around 89.2 feet tall.

Recreational maths with 1225638220

• 1225638220 backwards is 0228365221
• The number of decimal digits it has is: 10
• The sum of 1225638220's digits is 31
• More coming soon!