31428424840

Names of 31428424840

• Cardinal: 31428424840 can be written as Thirty-one billion, four hundred twenty-eight million, four hundred twenty-four thousand, eight hundred forty.

Scientific notation

• Scientific notation: 3.142842484 × 10¹⁰

Factors of 31428424840

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 5997929

Divisors of 31428424840

• Number of divisors d(n): 32
• Complete list of divisors:
  1 2 4 5 8 10 20 40 131 262 524 655 1048 1310 2620 5240 5997791 11995582 23991164 29988955 47982328 59977910 119955820 239911640 785710621 1571421242 3142842484 3928553105 6285684968 7857106210 15714212420 31428424840
• Sum of all divisors σ(n): 71253768960
• Sum of proper divisors (its aliquot sum) s(n): 39825344120
• 31428424840 is an abundant number, because the sum of its proper divisors (39825344120) is greater than itself. Its abundance is 8396919280

Bases of 31428424840

• Binary: 11101010001010001111011010010001000₂
• Hexadecimal: 0x75147B488
• Base-36: EFRO7T4

Squares and roots of 31428424840

• 31428424840 squared (31428424840²) is 987745887923529025600
• 31428424840 cubed (31428424840³) is 31043297399623695648628035904000
• The square root of 31428424840 is 177280.6386495717
• The cube root of 31428424840 is 3155.7859506683

Scales and comparisons

• 31,428,424,840 seconds is equal to 999 years, 16 weeks, 6 days, 22 hours, 40 seconds.
• To count from 1 to 31,428,424,840 would take you about one thousand, nine hundred ninety-eight 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 31428424840 cubic inches would be around 263 feet tall.

Recreational maths with 31428424840

• 31428424840 backwards is 04842482413
• 31428424840 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 31428424840's digits is 40
• More coming soon!