128044579920

Names of 128044579920

• Cardinal: 128044579920 can be written as One hundred twenty-eight billion, forty-four million, five hundred seventy-nine thousand, nine hundred twenty.

Scientific notation

• Scientific notation: 1.2804457992 × 10¹¹

Factors of 128044579920

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 17210334

Divisors of 128044579920

• Number of divisors d(n): 80
• Complete list of divisors:
  1 2 3 4 5 6 8 10 12 15 16 20 24 30 31 40 48 60 62 80 93 120 124 155 186 240 248 310 372 465 496 620 744 930 1240 1488 1860 2480 3720 7440 17210293 34420586 51630879 68841172 86051465 103261758 137682344 172102930 206523516 258154395 275364688 344205860 413047032 516308790 533519083 688411720 826094064 1032617580 1067038166 1376823440 1600557249 2065235160 2134076332 2667595415 3201114498 4130470320 4268152664 5335190830 6402228996 8002786245 8536305328 10670381660 12804457992 16005572490 21340763320 25608915984 32011144980 42681526640 64022289960 128044579920
• Sum of all divisors σ(n): 409742679552
• Sum of proper divisors (its aliquot sum) s(n): 281698099632
• 128044579920 is an abundant number, because the sum of its proper divisors (281698099632) is greater than itself. Its abundance is 153653519712

Bases of 128044579920

• Binary: 1110111010000000011010011110001010000₂
• Hexadecimal: 0x1DD00D3C50
• Base-36: 1MTMFQ6O

Squares and roots of 128044579920

• 128044579920 squared (128044579920²) is 16395414446889267206400
• 128044579920 cubed (128044579920³) is 2099343955466235370200119935488000
• The square root of 128044579920 is 357833.1733084567
• The cube root of 128044579920 is 5040.2692064569

Scales and comparisons

• 128,044,579,920 seconds is equal to 4,071 years, 21 weeks, 6 days, 10 hours, 52 minutes.
• To count from 1 to 128,044,579,920 would take you about eight thousand, one hundred forty-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 128044579920 cubic inches would be around 420 feet tall.

Recreational maths with 128044579920

• 128044579920 backwards is 029975440821
• The number of decimal digits it has is: 12
• The sum of 128044579920's digits is 51
• More coming soon!