21490849

Names of 21490849

• Cardinal: 21490849 can be written as Twenty-one million, four hundred ninety thousand, eight hundred forty-nine.

Scientific notation

• Scientific notation: 2.1490849 × 10⁷

Factors of 21490849

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 352370

Divisors of 21490849

• Number of divisors d(n): 4
• Complete list of divisors:
  1 61 352309 21490849
• Sum of all divisors σ(n): 21843220
• Sum of proper divisors (its aliquot sum) s(n): 352371
• 21490849 is a deficient number, because the sum of its proper divisors (352371) is less than itself. Its deficiency is 21138478

Bases of 21490849

• Binary: 1010001111110110010100001₂
• Hexadecimal: 0x147ECA1
• Base-36: CSMG1

Squares and roots of 21490849

• 21490849 squared (21490849²) is 461856590740801
• 21490849 cubed (21490849³) is 9925690251265352430049
• The square root of 21490849 is 4635.8223650177
• The cube root of 21490849 is 278.0254320021

Scales and comparisons

• 21,490,849 seconds is equal to 35 weeks, 3 days, 17 hours, 40 minutes, 49 seconds.
• To count from 1 to 21,490,849 would take you about two 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 21490849 cubic inches would be around 23.2 feet tall.

Recreational maths with 21490849

• 21490849 backwards is 94809412
• The number of decimal digits it has is: 8
• The sum of 21490849's digits is 37
• More coming soon!