21424455168

Names of 21424455168

• Cardinal: 21424455168 can be written as Twenty-one billion, four hundred twenty-four million, four hundred fifty-five thousand, one hundred sixty-eight.

Scientific notation

• Scientific notation: 2.1424455168 × 10¹⁰

Factors of 21424455168

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 13948218

Divisors of 21424455168

• Number of divisors d(n): 40
• Complete list of divisors:
  1 2 3 4 6 8 12 16 24 32 48 64 96 128 192 256 384 512 768 1536 13948213 27896426 41844639 55792852 83689278 111585704 167378556 223171408 334757112 446342816 669514224 892685632 1339028448 1785371264 2678056896 3570742528 5356113792 7141485056 10712227584 21424455168
• Sum of all divisors σ(n): 57076091688
• Sum of proper divisors (its aliquot sum) s(n): 35651636520
• 21424455168 is an abundant number, because the sum of its proper divisors (35651636520) is greater than itself. Its abundance is 14227181352

Bases of 21424455168

• Binary: 10011111100111111110011111000000000₂
• Hexadecimal: 0x4FCFF3E00
• Base-36: 9UBKFEO

Squares and roots of 21424455168

• 21424455168 squared (21424455168²) is 459007279245641908224
• 21424455168 cubed (21424455168³) is 9833980875983911922127058501632
• The square root of 21424455168 is 146370.9505605535
• The cube root of 21424455168 is 2777.3882604917

Scales and comparisons

• 21,424,455,168 seconds is equal to 681 years, 12 weeks, 5 hours, 32 minutes, 48 seconds.
• To count from 1 to 21,424,455,168 would take you about one thousand, three hundred sixty-two 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 21424455168 cubic inches would be around 231.4 feet tall.

Recreational maths with 21424455168

• 21424455168 backwards is 86155442412
• The number of decimal digits it has is: 11
• The sum of 21424455168's digits is 42
• More coming soon!