21490116768

Names of 21490116768

• Cardinal: 21490116768 can be written as Twenty-one billion, four hundred ninety million, one hundred sixteen thousand, seven hundred sixty-eight.

Scientific notation

• Scientific notation: 2.1490116768 × 10¹⁰

Factors of 21490116768

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 426

Divisors of 21490116768

• Number of divisors d(n): 72
• Complete list of divisors:
  1 2 3 4 6 8 9 12 16 18 24 32 36 48 72 96 144 288 421 842 1263 1684 2526 3368 3789 5052 6736 7578 10104 13472 15156 20208 30312 40416 60624 121248 177241 354482 531723 708964 1063446 1417928 1595169 2126892 2835856 3190338 4253784 5671712 6380676 8507568 12761352 17015136 25522704 51045408 74618461 149236922 223855383 298473844 447710766 596947688 671566149 895421532 1193895376 1343132298 1790843064 2387790752 2686264596 3581686128 5372529192 7163372256 10745058384 21490116768
• Sum of all divisors σ(n): 61258025556
• Sum of proper divisors (its aliquot sum) s(n): 39767908788
• 21490116768 is an abundant number, because the sum of its proper divisors (39767908788) is greater than itself. Its abundance is 18277792020

Bases of 21490116768

• Binary: 10100000000111010010010100010100000₂
• Hexadecimal: 0x500E928A0
• Base-36: 9VENS80

Squares and roots of 21490116768

• 21490116768 squared (21490116768²) is 461825118702274765824
• 21490116768 cubed (21490116768³) is 9924675727307345344777615736832
• The square root of 21490116768 is 146595.0775708379
• The cube root of 21490116768 is 2780.2227435693

Scales and comparisons

• 21,490,116,768 seconds is equal to 683 years, 16 weeks, 4 days, 4 hours, 52 minutes, 48 seconds.
• To count from 1 to 21,490,116,768 would take you about one thousand, three hundred sixty-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 21490116768 cubic inches would be around 231.7 feet tall.

Recreational maths with 21490116768

• 21490116768 backwards is 86761109412
• The number of decimal digits it has is: 11
• The sum of 21490116768's digits is 45
• More coming soon!