128821560768

Names of 128821560768

• Cardinal: 128821560768 can be written as One hundred twenty-eight billion, eight hundred twenty-one million, five hundred sixty thousand, seven hundred sixty-eight.

Scientific notation

• Scientific notation: 1.28821560768 × 10¹¹

Factors of 128821560768

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 612

Divisors of 128821560768

• Number of divisors d(n): 84
• Complete list of divisors:
  1 2 3 4 6 8 9 12 16 18 24 32 36 48 64 72 96 144 192 288 576 607 1214 1821 2428 3642 4856 5463 7284 9712 10926 14568 19424 21852 29136 38848 43704 58272 87408 116544 174816 349632 368449 736898 1105347 1473796 2210694 2947592 3316041 4421388 5895184 6632082 8842776 11790368 13264164 17685552 23580736 26528328 35371104 53056656 70742208 106113312 212226624 223648543 447297086 670945629 894594172 1341891258 1789188344 2012836887 2683782516 3578376688 4025673774 5367565032 7156753376 8051347548 10735130064 14313506752 16102695096 21470260128 32205390192 42940520256 64410780384 128821560768
• Sum of all divisors σ(n): 369853057600
• Sum of proper divisors (its aliquot sum) s(n): 241031496832
• 128821560768 is an abundant number, because the sum of its proper divisors (241031496832) is greater than itself. Its abundance is 112209936064

Bases of 128821560768

• Binary: 1110111111110010111010000010111000000₂
• Hexadecimal: 0x1DFE5D05C0
• Base-36: 1N6H14G0

Squares and roots of 128821560768

• 128821560768 squared (128821560768²) is 16594994518703516749824
• 128821560768 cubed (128821560768³) is 2137793094835791995562758269304832
• The square root of 128821560768 is 358917.2060071793
• The cube root of 128821560768 is 5050.4435223701

Scales and comparisons

• 128,821,560,768 seconds is equal to 4,096 years, 6 weeks, 4 days, 6 hours, 52 minutes, 48 seconds.
• To count from 1 to 128,821,560,768 would take you about eight thousand, one hundred ninety-two 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 128821560768 cubic inches would be around 420.9 feet tall.

Recreational maths with 128821560768

• 128821560768 backwards is 867065128821
• The number of decimal digits it has is: 12
• The sum of 128821560768's digits is 54
• More coming soon!