309479386820

Names of 309479386820

• Cardinal: 309479386820 can be written as Three hundred nine billion, four hundred seventy-nine million, three hundred eighty-six thousand, eight hundred twenty.

Scientific notation

• Scientific notation: 3.0947938682 × 10¹¹

Factors of 309479386820

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 40336

Divisors of 309479386820

• Number of divisors d(n): 72
• Complete list of divisors:
  1 2 4 5 10 19 20 38 76 95 190 361 380 722 1093 1444 1805 2186 3610 4372 5465 7220 10930 20767 21860 39217 41534 78434 83068 103835 156868 196085 207670 392170 394573 415340 745123 784340 789146 1490246 1578292 1972865 2980492 3725615 3945730 7451230 7891460 14157337 14902460 28314674 42864181 56629348 70786685 85728362 141573370 171456724 214320905 283146740 428641810 814419439 857283620 1628838878 3257677756 4072097195 8144194390 15473969341 16288388780 30947938682 61895877364 77369846705 154739693410 309479386820
• Sum of all divisors σ(n): 686557680984
• Sum of proper divisors (its aliquot sum) s(n): 377078294164
• 309479386820 is an abundant number, because the sum of its proper divisors (377078294164) is greater than itself. Its abundance is 67598907344

Bases of 309479386820

• Binary: 100100000001110011010001010111011000100₂
• Hexadecimal: 0x480E68AEC4
• Base-36: 3Y681B5W

Squares and roots of 309479386820

• 309479386820 squared (309479386820²) is 95777490866483189712400
• 309479386820 cubed (309479386820³) is 29641159144517368042031284150568000
• The square root of 309479386820 is 556308.7153910139
• The cube root of 309479386820 is 6764.1086650893

Scales and comparisons

• 309,479,386,820 seconds is equal to 9,840 years, 25 weeks, 2 days, 8 hours, 20 minutes, 20 seconds.
• To count from 1 to 309,479,386,820 would take you about nineteen thousand, six hundred eighty 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 309479386820 cubic inches would be around 563.7 feet tall.

Recreational maths with 309479386820

• 309479386820 backwards is 028683974903
• The number of decimal digits it has is: 12
• The sum of 309479386820's digits is 59
• More coming soon!