21494473

Names of 21494473

• Cardinal: 21494473 can be written as Twenty-one million, four hundred ninety-four thousand, four hundred seventy-three.

Scientific notation

• Scientific notation: 2.1494473 × 10⁷

Factors of 21494473

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 5
• Sum of prime factors: 337

Divisors of 21494473

• Number of divisors d(n): 32
• Complete list of divisors:
  1 7 11 13 77 91 109 143 197 763 1001 1199 1379 1417 2167 2561 8393 9919 15169 15587 17927 21473 28171 109109 150311 197197 236203 279149 1653421 1954043 3070639 21494473
• Sum of all divisors σ(n): 29272320
• Sum of proper divisors (its aliquot sum) s(n): 7777847
• 21494473 is a deficient number, because the sum of its proper divisors (7777847) is less than itself. Its deficiency is 13716626

Bases of 21494473

• Binary: 1010001111111101011001001₂
• Hexadecimal: 0x147FAC9
• Base-36: CSP8P

Squares and roots of 21494473

• 21494473 squared (21494473²) is 462012369547729
• 21494473 cubed (21494473³) is 9930712402909683201817
• The square root of 21494473 is 4636.2132177025
• The cube root of 21494473 is 278.0410589253

Scales and comparisons

• 21,494,473 seconds is equal to 35 weeks, 3 days, 18 hours, 41 minutes, 13 seconds.
• To count from 1 to 21,494,473 would take you about two 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 21494473 cubic inches would be around 23.2 feet tall.

Recreational maths with 21494473

• 21494473 backwards is 37449412
• The number of decimal digits it has is: 8
• The sum of 21494473's digits is 34
• More coming soon!