21002922

Names of 21002922

• Cardinal: 21002922 can be written as Twenty-one million, two thousand, nine hundred twenty-two.

Scientific notation

• Scientific notation: 2.1002922 × 10⁷

Factors of 21002922

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 326

Divisors of 21002922

• Number of divisors d(n): 64
• Complete list of divisors:
  1 2 3 6 9 17 18 27 34 51 54 102 137 153 167 274 306 334 411 459 501 822 918 1002 1233 1503 2329 2466 2839 3006 3699 4509 4658 5678 6987 7398 8517 9018 13974 17034 20961 22879 25551 41922 45758 51102 62883 68637 76653 125766 137274 153306 205911 388943 411822 617733 777886 1166829 1235466 2333658 3500487 7000974 10501461 21002922
• Sum of all divisors σ(n): 50077440
• Sum of proper divisors (its aliquot sum) s(n): 29074518
• 21002922 is an abundant number, because the sum of its proper divisors (29074518) is greater than itself. Its abundance is 8071596

Bases of 21002922

• Binary: 1010000000111101010101010₂
• Hexadecimal: 0x1407AAA
• Base-36: CI5YI

Squares and roots of 21002922

• 21002922 squared (21002922²) is 441122732538084
• 21002922 cubed (21002922³) is 9264866343924240281448
• The square root of 21002922 is 4582.8945002039
• The cube root of 21002922 is 275.9052131977

Scales and comparisons

• 21,002,922 seconds is equal to 34 weeks, 5 days, 2 hours, 8 minutes, 42 seconds.
• To count from 1 to 21,002,922 would take you about fifteen hours!

  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 21002922 cubic inches would be around 23 feet tall.

Recreational maths with 21002922

• 21002922 backwards is 22920012
• 21002922 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 21002922's digits is 18
• More coming soon!