28181427

Names of 28181427

• Cardinal: 28181427 can be written as Twenty-eight million, one hundred eighty-one thousand, four hundred twenty-seven.

Scientific notation

• Scientific notation: 2.8181427 × 10⁷

Factors of 28181427

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 5
• Sum of prime factors: 395

Divisors of 28181427

• Number of divisors d(n): 32
• Complete list of divisors:
  1 3 17 19 51 57 127 229 323 381 687 969 2159 2413 3893 4351 6477 7239 11679 13053 29083 41021 73967 87249 123063 221901 494411 552577 1483233 1657731 9393809 28181427
• Sum of all divisors σ(n): 42393600
• Sum of proper divisors (its aliquot sum) s(n): 14212173
• 28181427 is a deficient number, because the sum of its proper divisors (14212173) is less than itself. Its deficiency is 13969254

Bases of 28181427

• Binary: 1101011100000001110110011₂
• Hexadecimal: 0x1AE03B3
• Base-36: GS0XF

Squares and roots of 28181427

• 28181427 squared (28181427²) is 794192827756329
• 28181427 cubed (28181427³) is 22381487199338559501483
• The square root of 28181427 is 5308.6181817871
• The cube root of 28181427 is 304.3133419401

Scales and comparisons

• 28,181,427 seconds is equal to 46 weeks, 4 days, 4 hours, 10 minutes, 27 seconds.
• To count from 1 to 28,181,427 would take you about seventeen weeks!

  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 28181427 cubic inches would be around 25.4 feet tall.

Recreational maths with 28181427

• 28181427 backwards is 72418182
• The number of decimal digits it has is: 8
• The sum of 28181427's digits is 33
• More coming soon!