21289049

Names of 21289049

• Cardinal: 21289049 can be written as Twenty-one million, two hundred eighty-nine thousand and forty-nine.

Scientific notation

• Scientific notation: 2.1289049 × 10⁷

Factors of 21289049

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 18775

Divisors of 21289049

• Number of divisors d(n): 8
• Complete list of divisors:
  1 17 67 1139 18691 317747 1252297 21289049
• Sum of all divisors σ(n): 22879008
• Sum of proper divisors (its aliquot sum) s(n): 1589959
• 21289049 is a deficient number, because the sum of its proper divisors (1589959) is less than itself. Its deficiency is 19699090

Bases of 21289049

• Binary: 1010001001101100001011001₂
• Hexadecimal: 0x144D859
• Base-36: COAQH

Squares and roots of 21289049

• 21289049 squared (21289049²) is 453223607324401
• 21289049 cubed (21289049³) is 9648699584285931784649
• The square root of 21289049 is 4614.0057433861
• The cube root of 21289049 is 277.1524702875

Scales and comparisons

• 21,289,049 seconds is equal to 35 weeks, 1 day, 9 hours, 37 minutes, 29 seconds.
• To count from 1 to 21,289,049 would take you about five days!

  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 21289049 cubic inches would be around 23.1 feet tall.

Recreational maths with 21289049

• 21289049 backwards is 94098212
• The number of decimal digits it has is: 8
• The sum of 21289049's digits is 35
• More coming soon!