21428153

Names of 21428153

• Cardinal: 21428153 can be written as Twenty-one million, four hundred twenty-eight thousand, one hundred fifty-three.

Scientific notation

• Scientific notation: 2.1428153 × 10⁷

Factors of 21428153

• Number of distinct prime factors ω(n): 1
• Total number of prime factors Ω(n): 1
• Sum of prime factors: 21428153

Divisors of 21428153

• Number of divisors d(n): 2
• Complete list of divisors:
  1 21428153
• Sum of all divisors σ(n): 21428154
• Sum of proper divisors (its aliquot sum) s(n): 1
• 21428153 is a deficient number, because the sum of its proper divisors (1) is less than itself. Its deficiency is 21428152

Bases of 21428153

• Binary: 1010001101111011110111001₂
• Hexadecimal: 0x146F7B9
• Base-36: CRA2H

Squares and roots of 21428153

• 21428153 squared (21428153²) is 459165740991409
• 21428153 cubed (21428153³) is 9839073750322283737577
• The square root of 21428153 is 4629.0553031909
• The cube root of 21428153 is 277.7548042453

Scales and comparisons

• 21,428,153 seconds is equal to 35 weeks, 3 days, 15 minutes, 53 seconds.
• To count from 1 to 21,428,153 would take you about twenty-three minutes!

  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 21428153 cubic inches would be around 23.1 feet tall.

Recreational maths with 21428153

• 21428153 backwards is 35182412
• The number of decimal digits it has is: 8
• The sum of 21428153's digits is 26
• More coming soon!