21395356848

Names of 21395356848

• Cardinal: 21395356848 can be written as Twenty-one billion, three hundred ninety-five million, three hundred fifty-six thousand, eight hundred forty-eight.

Scientific notation

• Scientific notation: 2.1395356848 × 10¹⁰

Factors of 21395356848

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 1834312

Divisors of 21395356848

• Number of divisors d(n): 70
• Complete list of divisors:
  1 2 3 4 6 8 9 12 16 18 24 27 36 48 54 72 81 108 144 162 216 243 324 432 486 648 729 972 1296 1458 1944 2916 3888 5832 11664 1834307 3668614 5502921 7337228 11005842 14674456 16508763 22011684 29348912 33017526 44023368 49526289 66035052 88046736 99052578 132070104 148578867 198105156 264140208 297157734 396210312 445736601 594315468 792420624 891473202 1188630936 1337209803 1782946404 2377261872 2674419606 3565892808 5348839212 7131785616 10697678424 21395356848
• Sum of all divisors σ(n): 62151857964
• Sum of proper divisors (its aliquot sum) s(n): 40756501116
• 21395356848 is an abundant number, because the sum of its proper divisors (40756501116) is greater than itself. Its abundance is 19361144268

Bases of 21395356848

• Binary: 10011111011010000110011110010110000₂
• Hexadecimal: 0x4FB433CB0
• Base-36: 9TU8R00

Squares and roots of 21395356848

• 21395356848 squared (21395356848²) is 457761294653260495104
• 21395356848 cubed (21395356848³) is 9793966250308982719451236872192
• The square root of 21395356848 is 146271.5175555377
• The cube root of 21395356848 is 2776.1302907617

Scales and comparisons

• 21,395,356,848 seconds is equal to 680 years, 15 weeks, 6 days, 10 hours, 40 minutes, 48 seconds.
• To count from 1 to 21,395,356,848 would take you about one thousand, three hundred sixty 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 21395356848 cubic inches would be around 231.3 feet tall.

Recreational maths with 21395356848

• 21395356848 backwards is 84865359312
• 21395356848 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21395356848's digits is 54
• More coming soon!