21996240

Names of 21996240

• Cardinal: 21996240 can be written as Twenty-one million, nine hundred ninety-six thousand, two hundred forty.

Scientific notation

• Scientific notation: 2.199624 × 10⁷

Factors of 21996240

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 13110

Divisors of 21996240

• Number of divisors d(n): 80
• Complete list of divisors:
  1 2 3 4 5 6 7 8 10 12 14 15 16 20 21 24 28 30 35 40 42 48 56 60 70 80 84 105 112 120 140 168 210 240 280 336 420 560 840 1680 13093 26186 39279 52372 65465 78558 91651 104744 130930 157116 183302 196395 209488 261860 274953 314232 366604 392790 458255 523720 549906 628464 733208 785580 916510 1047440 1099812 1374765 1466416 1571160 1833020 2199624 2749530 3142320 3666040 4399248 5499060 7332080 10998120 21996240
• Sum of all divisors σ(n): 77935488
• Sum of proper divisors (its aliquot sum) s(n): 55939248
• 21996240 is an abundant number, because the sum of its proper divisors (55939248) is greater than itself. Its abundance is 33943008

Bases of 21996240

• Binary: 1010011111010001011010000₂
• Hexadecimal: 0x14FA2D0
• Base-36: D3GEO

Squares and roots of 21996240

• 21996240 squared (21996240²) is 483834574137600
• 21996240 cubed (21996240³) is 10642541413028442624000
• The square root of 21996240 is 4690.0149253493
• The cube root of 21996240 is 280.1879690229

Scales and comparisons

• 21,996,240 seconds is equal to 36 weeks, 2 days, 14 hours, 4 minutes.
• To count from 1 to 21,996,240 would take you about two 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 21996240 cubic inches would be around 23.3 feet tall.

Recreational maths with 21996240

• 21996240 backwards is 04269912
• The number of decimal digits it has is: 8
• The sum of 21996240's digits is 33
• More coming soon!