21047201

Names of 21047201

• Cardinal: 21047201 can be written as Twenty-one million, forty-seven thousand, two hundred one.

Scientific notation

• Scientific notation: 2.1047201 × 10⁷

Factors of 21047201

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 56791

Divisors of 21047201

• Number of divisors d(n): 8
• Complete list of divisors:
  1 7 53 371 56731 397117 3006743 21047201
• Sum of all divisors σ(n): 24508224
• Sum of proper divisors (its aliquot sum) s(n): 3461023
• 21047201 is a deficient number, because the sum of its proper divisors (3461023) is less than itself. Its deficiency is 17586178

Bases of 21047201

• Binary: 1010000010010011110100001₂
• Hexadecimal: 0x14127A1
• Base-36: CJ44H

Squares and roots of 21047201

• 21047201 squared (21047201²) is 442984669934401
• 21047201 cubed (21047201³) is 9323587388027994661601
• The square root of 21047201 is 4587.7228556223
• The cube root of 21047201 is 276.0989676937

Scales and comparisons

• 21,047,201 seconds is equal to 34 weeks, 5 days, 14 hours, 26 minutes, 41 seconds.
• To count from 1 to 21,047,201 would take you about nine 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 21047201 cubic inches would be around 23 feet tall.

Recreational maths with 21047201

• 21047201 backwards is 10274012
• The number of decimal digits it has is: 8
• The sum of 21047201's digits is 17
• More coming soon!