21690741

Names of 21690741

• Cardinal: 21690741 can be written as Twenty-one million, six hundred ninety thousand, seven hundred forty-one.

Scientific notation

• Scientific notation: 2.1690741 × 10⁷

Factors of 21690741

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 16555

Divisors of 21690741

• Number of divisors d(n): 8
• Complete list of divisors:
  1 3 449 1347 16103 48309 7230247 21690741
• Sum of all divisors σ(n): 28987200
• Sum of proper divisors (its aliquot sum) s(n): 7296459
• 21690741 is a deficient number, because the sum of its proper divisors (7296459) is less than itself. Its deficiency is 14394282

Bases of 21690741

• Binary: 1010010101111100101110101₂
• Hexadecimal: 0x14AF975
• Base-36: CWWOL

Squares and roots of 21690741

• 21690741 squared (21690741²) is 470488245129081
• 21690741 cubed (21690741³) is 10205238668639407539021
• The square root of 21690741 is 4657.3319615417
• The cube root of 21690741 is 278.8847688993

Scales and comparisons

• 21,690,741 seconds is equal to 35 weeks, 6 days, 1 hour, 12 minutes, 21 seconds.
• To count from 1 to 21,690,741 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 21690741 cubic inches would be around 23.2 feet tall.

Recreational maths with 21690741

• 21690741 backwards is 14709612
• The number of decimal digits it has is: 8
• The sum of 21690741's digits is 30
• More coming soon!