21382629720

Names of 21382629720

• Cardinal: 21382629720 can be written as Twenty-one billion, three hundred eighty-two million, six hundred twenty-nine thousand, seven hundred twenty.

Scientific notation

• Scientific notation: 2.138262972 × 10¹⁰

Factors of 21382629720

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 510928

Divisors of 21382629720

• Number of divisors d(n): 64
• Complete list of divisors:
  1 2 3 4 5 6 8 10 12 15 20 24 30 40 60 120 349 698 1047 1396 1745 2094 2792 3490 4188 5235 6980 8376 10470 13960 20940 41880 510569 1021138 1531707 2042276 2552845 3063414 4084552 5105690 6126828 7658535 10211380 12253656 15317070 20422760 30634140 61268280 178188581 356377162 534565743 712754324 890942905 1069131486 1425508648 1781885810 2138262972 2672828715 3563771620 4276525944 5345657430 7127543240 10691314860 21382629720
• Sum of all divisors σ(n): 64331820000
• Sum of proper divisors (its aliquot sum) s(n): 42949190280
• 21382629720 is an abundant number, because the sum of its proper divisors (42949190280) is greater than itself. Its abundance is 21566560560

Bases of 21382629720

• Binary: 10011111010100000010000100101011000₂
• Hexadecimal: 0x4FA810958
• Base-36: 9TMNYOO

Squares and roots of 21382629720

• 21382629720 squared (21382629720²) is 457216853742627278400
• 21382629720 cubed (21382629720³) is 9776498685321995273998554048000
• The square root of 21382629720 is 146228.0059359357
• The cube root of 21382629720 is 2775.5797168849

Scales and comparisons

• 21,382,629,720 seconds is equal to 679 years, 46 weeks, 6 days, 3 hours, 22 minutes.
• To count from 1 to 21,382,629,720 would take you about one thousand, three hundred fifty-nine 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 21382629720 cubic inches would be around 231.3 feet tall.

Recreational maths with 21382629720

• 21382629720 backwards is 02792628312
• The number of decimal digits it has is: 11
• The sum of 21382629720's digits is 42
• More coming soon!