21231472

Names of 21231472

• Cardinal: 21231472 can be written as Twenty-one million, two hundred thirty-one thousand, four hundred seventy-two.

Scientific notation

• Scientific notation: 2.1231472 × 10⁷

Factors of 21231472

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 5
• Sum of prime factors: 1326969

Divisors of 21231472

• Number of divisors d(n): 10
• Complete list of divisors:
  1 2 4 8 16 1326967 2653934 5307868 10615736 21231472
• Sum of all divisors σ(n): 41136008
• Sum of proper divisors (its aliquot sum) s(n): 19904536
• 21231472 is a deficient number, because the sum of its proper divisors (19904536) is less than itself. Its deficiency is 1326936

Bases of 21231472

• Binary: 1010000111111011101110000₂
• Hexadecimal: 0x143F770
• Base-36: CN2B4

Squares and roots of 21231472

• 21231472 squared (21231472²) is 450775403286784
• 21231472 cubed (21231472³) is 9570625353172062466048
• The square root of 21231472 is 4607.7621466389
• The cube root of 21231472 is 276.9023884197

Scales and comparisons

• 21,231,472 seconds is equal to 35 weeks, 17 hours, 37 minutes, 52 seconds.
• To count from 1 to 21,231,472 would take you about four 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 21231472 cubic inches would be around 23.1 feet tall.

Recreational maths with 21231472

• 21231472 backwards is 27413212
• The number of decimal digits it has is: 8
• The sum of 21231472's digits is 22
• More coming soon!