491245819128

Names of 491245819128

• Cardinal: 491245819128 can be written as Four hundred ninety-one billion, two hundred forty-five million, eight hundred nineteen thousand, one hundred twenty-eight.

Scientific notation

• Scientific notation: 4.91245819128 × 10¹¹

Factors of 491245819128

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 359097845

Divisors of 491245819128

• Number of divisors d(n): 48
• Complete list of divisors:
  1 2 3 4 6 8 9 12 18 19 24 36 38 57 72 76 114 152 171 228 342 456 684 1368 359097821 718195642 1077293463 1436391284 2154586926 2872782568 3231880389 4309173852 6463760778 6822858599 8618347704 12927521556 13645717198 20468575797 25855043112 27291434396 40937151594 54582868792 61405727391 81874303188 122811454782 163748606376 245622909564 491245819128
• Sum of all divisors σ(n): 1400481505800
• Sum of proper divisors (its aliquot sum) s(n): 909235686672
• 491245819128 is an abundant number, because the sum of its proper divisors (909235686672) is greater than itself. Its abundance is 417989867544

Bases of 491245819128

• Binary: 111001001100000100010000101010011111000₂
• Hexadecimal: 0x72608854F8
• Base-36: 69OB2RY0

Squares and roots of 491245819128

• 491245819128 squared (491245819128²) is 241322454810739690680384
• 491245819128 cubed (491245819128³) is 118548646987481583559866585721585152
• The square root of 491245819128 is 700889.3059021517
• The cube root of 491245819128 is 7890.4109426599

Scales and comparisons

• 491,245,819,128 seconds is equal to 15,620 years, 5 weeks, 11 hours, 58 minutes, 48 seconds.
• To count from 1 to 491,245,819,128 would take you about thirty-one thousand, two hundred forty 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 491245819128 cubic inches would be around 657.5 feet tall.

Recreational maths with 491245819128

• 491245819128 backwards is 821918542194
• The number of decimal digits it has is: 12
• The sum of 491245819128's digits is 54
• More coming soon!