1405622721

Names of 1405622721

• Cardinal: 1405622721 can be written as One billion, four hundred five million, six hundred twenty-two thousand, seven hundred twenty-one.

Scientific notation

• Scientific notation: 1.405622721 × 10⁹

Factors of 1405622721

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 4
• Sum of prime factors: 394136

Divisors of 1405622721

• Number of divisors d(n): 16
• Complete list of divisors:
  1 3 29 41 87 123 1189 3567 394063 1182189 11427827 16156583 34283481 48469749 468540907 1405622721
• Sum of all divisors σ(n): 1986082560
• Sum of proper divisors (its aliquot sum) s(n): 580459839
• 1405622721 is a deficient number, because the sum of its proper divisors (580459839) is less than itself. Its deficiency is 825162882

Bases of 1405622721

• Binary: 1010011110010000001100111000001₂
• Hexadecimal: 0x53C819C1
• Base-36: N8VDFL

Squares and roots of 1405622721

• 1405622721 squared (1405622721²) is 1975775233791443841
• 1405622721 cubed (1405622721³) is 2777194560206340438305111361
• The square root of 1405622721 is 37491.6353471011
• The cube root of 1405622721 is 1120.1845786885

Scales and comparisons

• 1,405,622,721 seconds is equal to 44 years, 36 weeks, 18 hours, 45 minutes, 21 seconds.
• To count from 1 to 1,405,622,721 would take you about eighty-nine 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 1405622721 cubic inches would be around 93.3 feet tall.

Recreational maths with 1405622721

• 1405622721 backwards is 1272265041
• The number of decimal digits it has is: 10
• The sum of 1405622721's digits is 30
• More coming soon!