21021798344

Names of 21021798344

• Cardinal: 21021798344 can be written as Twenty-one billion, twenty-one million, seven hundred ninety-eight thousand, three hundred forty-four.

Scientific notation

• Scientific notation: 2.1021798344 × 10¹⁰

Factors of 21021798344

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 2978

Divisors of 21021798344

• Number of divisors d(n): 64
• Complete list of divisors:
  1 2 4 8 37 74 148 163 167 296 326 334 652 668 1304 1336 2609 5218 6031 6179 10436 12062 12358 20872 24124 24716 27221 48248 49432 54442 96533 108884 193066 217768 386132 425267 435703 772264 850534 871406 1007177 1701068 1742812 2014354 3402136 3485624 4028708 8057416 15734879 16121011 31469758 32242022 62939516 64484044 71019589 125879032 128968088 142039178 284078356 568156712 2627724793 5255449586 10510899172 21021798344
• Sum of all divisors σ(n): 40989110400
• Sum of proper divisors (its aliquot sum) s(n): 19967312056
• 21021798344 is a deficient number, because the sum of its proper divisors (19967312056) is less than itself. Its deficiency is 1054486288

Bases of 21021798344

• Binary: 10011100100111111110010111111001000₂
• Hexadecimal: 0x4E4FF2FC8
• Base-36: 9NNU3EW

Squares and roots of 21021798344

• 21021798344 squared (21021798344²) is 441916005615801142336
• 21021798344 cubed (21021798344³) is 9289869155041343154192233091584
• The square root of 21021798344 is 144988.9593865685
• The cube root of 21021798344 is 2759.8784491033

Scales and comparisons

• 21,021,798,344 seconds is equal to 668 years, 22 weeks, 1 day, 20 hours, 25 minutes, 44 seconds.
• To count from 1 to 21,021,798,344 would take you about one thousand, three hundred thirty-six years!

  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 21021798344 cubic inches would be around 230 feet tall.

Recreational maths with 21021798344

• 21021798344 backwards is 44389712012
• The number of decimal digits it has is: 11
• The sum of 21021798344's digits is 41
• More coming soon!