28012891120

Names of 28012891120

• Cardinal: 28012891120 can be written as Twenty-eight billion, twelve million, eight hundred ninety-one thousand, one hundred twenty.

Scientific notation

• Scientific notation: 2.801289112 × 10¹⁰

Factors of 28012891120

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 8372

Divisors of 28012891120

• Number of divisors d(n): 80
• Complete list of divisors:
  1 2 4 5 8 10 16 20 40 47 80 94 188 235 376 470 752 940 1021 1880 2042 3760 4084 5105 7297 8168 10210 14594 16336 20420 29188 36485 40840 47987 58376 72970 81680 95974 116752 145940 191948 239935 291880 342959 383896 479870 583760 685918 767792 959740 1371836 1714795 1919480 2743672 3429590 3838960 5487344 6859180 7450237 13718360 14900474 27436720 29800948 37251185 59601896 74502370 119203792 149004740 298009480 350161139 596018960 700322278 1400644556 1750805695 2801289112 3501611390 5602578224 7003222780 14006445560 28012891120
• Sum of all divisors σ(n): 66589987968
• Sum of proper divisors (its aliquot sum) s(n): 38577096848
• 28012891120 is an abundant number, because the sum of its proper divisors (38577096848) is greater than itself. Its abundance is 10564205728

Bases of 28012891120

• Binary: 11010000101101100101100101111110000₂
• Hexadecimal: 0x685B2CBF0
• Base-36: CVA5H4G

Squares and roots of 28012891120

• 28012891120 squared (28012891120²) is 784722068900974854400
• 28012891120 cubed (28012891120³) is 21982333875584146658165052928000
• The square root of 28012891120 is 167370.5204628341
• The cube root of 28012891120 is 3037.0549126727

Scales and comparisons

• 28,012,891,120 seconds is equal to 890 years, 37 weeks, 4 days, 6 hours, 38 minutes, 40 seconds.
• To count from 1 to 28,012,891,120 would take you about one thousand, seven hundred eighty-one 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 28012891120 cubic inches would be around 253.1 feet tall.

Recreational maths with 28012891120

• 28012891120 backwards is 02119821082
• The number of decimal digits it has is: 11
• The sum of 28012891120's digits is 34
• More coming soon!