123728728

Names of 123728728

• Cardinal: 123728728 can be written as One hundred twenty-three million, seven hundred twenty-eight thousand, seven hundred twenty-eight.

Scientific notation

• Scientific notation: 1.23728728 × 10⁸

Factors of 123728728

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 4
• Sum of prime factors: 15466093

Divisors of 123728728

• Number of divisors d(n): 8
• Complete list of divisors:
  1 2 4 8 15466091 30932182 61864364 123728728
• Sum of all divisors σ(n): 231991380
• Sum of proper divisors (its aliquot sum) s(n): 108262652
• 123728728 is a deficient number, because the sum of its proper divisors (108262652) is less than itself. Its deficiency is 15466076

Bases of 123728728

• Binary: 111010111111111001101011000₂
• Hexadecimal: 0x75FF358
• Base-36: 21NXP4

Squares and roots of 123728728

• 123728728 squared (123728728²) is 15308798132497984
• 123728728 cubed (123728728³) is 1894138120142751022884352
• The square root of 123728728 is 11123.3415842541
• The cube root of 123728728 is 498.2991917291

Scales and comparisons

• 123,728,728 seconds is equal to 3 years, 48 weeks, 4 days, 1 hour, 5 minutes, 28 seconds.
• To count from 1 to 123,728,728 would take you about five 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 123728728 cubic inches would be around 41.5 feet tall.

Recreational maths with 123728728

• 123728728 backwards is 827827321
• The number of decimal digits it has is: 9
• The sum of 123728728's digits is 40
• More coming soon!