21445491744

Names of 21445491744

• Cardinal: 21445491744 can be written as Twenty-one billion, four hundred forty-five million, four hundred ninety-one thousand, seven hundred forty-four.

Scientific notation

• Scientific notation: 2.1445491744 × 10¹⁰

Factors of 21445491744

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 10265

Divisors of 21445491744

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 3 4 6 8 9 12 16 18 24 27 32 36 48 54 72 96 108 144 216 288 432 864 3907 6353 7814 11721 12706 15628 19059 23442 25412 31256 35163 38118 46884 50824 57177 62512 70326 76236 93768 101648 105489 114354 125024 140652 152472 171531 187536 203296 210978 228708 281304 304944 343062 375072 421956 457416 562608 609888 686124 843912 914832 1125216 1372248 1687824 1829664 2744496 3375648 5488992 24821171 49642342 74463513 99284684 148927026 198569368 223390539 297854052 397138736 446781078 595708104 670171617 794277472 893562156 1191416208 1340343234 1787124312 2382832416 2680686468 3574248624 5361372936 7148497248 10722745872 21445491744
• Sum of all divisors σ(n): 62575208640
• Sum of proper divisors (its aliquot sum) s(n): 41129716896
• 21445491744 is an abundant number, because the sum of its proper divisors (41129716896) is greater than itself. Its abundance is 19684225152

Bases of 21445491744

• Binary: 10011111110010000000011110000100000₂
• Hexadecimal: 0x4FE403C20
• Base-36: 9UO3BC0

Squares and roots of 21445491744

• 21445491744 squared (21445491744²) is 459909116141972161536
• 21445491744 cubed (21445491744³) is 9862977153213001122098122358784
• The square root of 21445491744 is 146442.7934177711
• The cube root of 21445491744 is 2778.2969981341

Scales and comparisons

• 21,445,491,744 seconds is equal to 681 years, 46 weeks, 5 days, 17 hours, 2 minutes, 24 seconds.
• To count from 1 to 21,445,491,744 would take you about one thousand, three hundred sixty-three 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 21445491744 cubic inches would be around 231.5 feet tall.

Recreational maths with 21445491744

• 21445491744 backwards is 44719454412
• The number of decimal digits it has is: 11
• The sum of 21445491744's digits is 45
• More coming soon!