128679971616

Names of 128679971616

• Cardinal: 128679971616 can be written as One hundred twenty-eight billion, six hundred seventy-nine million, nine hundred seventy-one thousand, six hundred sixteen.

Scientific notation

• Scientific notation: 1.28679971616 × 10¹¹

Factors of 128679971616

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 63829363

Divisors of 128679971616

• Number of divisors d(n): 72
• Complete list of divisors:
  1 2 3 4 6 7 8 9 12 14 16 18 21 24 28 32 36 42 48 56 63 72 84 96 112 126 144 168 224 252 288 336 504 672 1008 2016 63829351 127658702 191488053 255317404 382976106 446805457 510634808 574464159 765952212 893610914 1021269616 1148928318 1340416371 1531904424 1787221828 2042539232 2297856636 2680832742 3063808848 3574443656 4021249113 4595713272 5361665484 6127617696 7148887312 8042498226 9191426544 10723330968 14297774624 16084996452 18382853088 21446661936 32169992904 42893323872 64339985808 128679971616
• Sum of all divisors σ(n): 418209914304
• Sum of proper divisors (its aliquot sum) s(n): 289529942688
• 128679971616 is an abundant number, because the sum of its proper divisors (289529942688) is greater than itself. Its abundance is 160849971072

Bases of 128679971616

• Binary: 1110111110101111011001000101100100000₂
• Hexadecimal: 0x1DF5EC8B20
• Base-36: 1N44QDK0

Squares and roots of 128679971616

• 128679971616 squared (128679971616²) is 16558535095094565651456
• 128679971616 cubed (128679971616³) is 2130751826039308568865206629072896
• The square root of 128679971616 is 358719.9069134581
• The cube root of 128679971616 is 5048.5925119277

Scales and comparisons

• 128,679,971,616 seconds is equal to 4,091 years, 32 weeks, 3 days, 12 hours, 33 minutes, 36 seconds.
• To count from 1 to 128,679,971,616 would take you about eight thousand, one hundred eighty-three 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 128679971616 cubic inches would be around 420.7 feet tall.

Recreational maths with 128679971616

• 128679971616 backwards is 616179976821
• 128679971616 is a Harshad number.
• The number of decimal digits it has is: 12
• The sum of 128679971616's digits is 63
• More coming soon!