21353052138

Names of 21353052138

• Cardinal: 21353052138 can be written as Twenty-one billion, three hundred fifty-three million, fifty-two thousand, one hundred thirty-eight.

Scientific notation

• Scientific notation: 2.1353052138 × 10¹⁰

Factors of 21353052138

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 3563

Divisors of 21353052138

• Number of divisors d(n): 64
• Complete list of divisors:
  1 2 3 6 11 22 33 66 131 262 393 786 1039 1441 2078 2377 2882 3117 4323 4754 6234 7131 8646 11429 14262 22858 26147 34287 52294 68574 78441 136109 156882 272218 311387 408327 622774 816654 934161 1497199 1868322 2469703 2994398 3425257 4491597 4939406 6850514 7409109 8983194 10275771 14818218 20551542 27166733 54333466 81500199 163000398 323531093 647062186 970593279 1941186558 3558842023 7117684046 10676526069 21353052138
• Sum of all divisors σ(n): 47009064960
• Sum of proper divisors (its aliquot sum) s(n): 25656012822
• 21353052138 is an abundant number, because the sum of its proper divisors (25656012822) is greater than itself. Its abundance is 4302960684

Bases of 21353052138

• Binary: 10011111000101111011011011111101010₂
• Hexadecimal: 0x4F8BDB7EA
• Base-36: 9T520H6

Squares and roots of 21353052138

• 21353052138 squared (21353052138²) is 455952835608146371044
• 21353052138 cubed (21353052138³) is 9735984671209692398438025492072
• The square root of 21353052138 is 146126.8357900079
• The cube root of 21353052138 is 2774.2993502267

Scales and comparisons

• 21,353,052,138 seconds is equal to 678 years, 49 weeks, 6 days, 19 hours, 22 minutes, 18 seconds.
• To count from 1 to 21,353,052,138 would take you about one thousand, three hundred fifty-seven 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 21353052138 cubic inches would be around 231.2 feet tall.

Recreational maths with 21353052138

• 21353052138 backwards is 83125035312
• 21353052138 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21353052138's digits is 33
• More coming soon!