21368977

Names of 21368977

• Cardinal: 21368977 can be written as Twenty-one million, three hundred sixty-eight thousand, nine hundred seventy-seven.

Scientific notation

• Scientific notation: 2.1368977 × 10⁷

Factors of 21368977

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 160695

Divisors of 21368977

• Number of divisors d(n): 8
• Complete list of divisors:
  1 7 19 133 160669 1124683 3052711 21368977
• Sum of all divisors σ(n): 25707200
• Sum of proper divisors (its aliquot sum) s(n): 4338223
• 21368977 is a deficient number, because the sum of its proper divisors (4338223) is less than itself. Its deficiency is 17030754

Bases of 21368977

• Binary: 1010001100001000010010001₂
• Hexadecimal: 0x1461091
• Base-36: CQ0EP

Squares and roots of 21368977

• 21368977 squared (21368977²) is 456633178026529
• 21368977 cubed (21368977³) is 9757783878685803590833
• The square root of 21368977 is 4622.6590832551
• The cube root of 21368977 is 277.4988859085

Scales and comparisons

• 21,368,977 seconds is equal to 35 weeks, 2 days, 7 hours, 49 minutes, 37 seconds.
• To count from 1 to 21,368,977 would take you about six 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 21368977 cubic inches would be around 23.1 feet tall.

Recreational maths with 21368977

• 21368977 backwards is 77986312
• The number of decimal digits it has is: 8
• The sum of 21368977's digits is 43
• More coming soon!