21957401

Names of 21957401

• Cardinal: 21957401 can be written as Twenty-one million, nine hundred fifty-seven thousand, four hundred one.

Scientific notation

• Scientific notation: 2.1957401 × 10⁷

Factors of 21957401

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 2151

Divisors of 21957401

• Number of divisors d(n): 8
• Complete list of divisors:
  1 83 137 1931 11371 160273 264547 21957401
• Sum of all divisors σ(n): 22395744
• Sum of proper divisors (its aliquot sum) s(n): 438343
• 21957401 is a deficient number, because the sum of its proper divisors (438343) is less than itself. Its deficiency is 21519058

Bases of 21957401

• Binary: 1010011110000101100011001₂
• Hexadecimal: 0x14F0B19
• Base-36: D2MFT

Squares and roots of 21957401

• 21957401 squared (21957401²) is 482127458674801
• 21957401 cubed (21957401³) is 10586265943233534152201
• The square root of 21957401 is 4685.8724907961
• The cube root of 21957401 is 280.0229615523

Scales and comparisons

• 21,957,401 seconds is equal to 36 weeks, 2 days, 3 hours, 16 minutes, 41 seconds.
• To count from 1 to 21,957,401 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 21957401 cubic inches would be around 23.3 feet tall.

Recreational maths with 21957401

• 21957401 backwards is 10475912
• The number of decimal digits it has is: 8
• The sum of 21957401's digits is 29
• More coming soon!