21256732672

Names of 21256732672

• Cardinal: 21256732672 can be written as Twenty-one billion, two hundred fifty-six million, seven hundred thirty-two thousand, six hundred seventy-two.

Scientific notation

• Scientific notation: 2.1256732672 × 10¹⁰

Factors of 21256732672

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 26
• Sum of prime factors: 190

Divisors of 21256732672

• Number of divisors d(n): 100
• Complete list of divisors:
  1 2 4 7 8 14 16 28 32 56 64 112 128 181 224 256 362 448 512 724 896 1024 1267 1448 1792 2048 2534 2896 3584 4096 5068 5792 7168 8192 10136 11584 14336 16384 20272 23168 28672 32768 40544 46336 57344 65536 81088 92672 114688 131072 162176 185344 229376 262144 324352 370688 458752 524288 648704 741376 917504 1048576 1297408 1482752 1835008 2097152 2594816 2965504 3670016 4194304 5189632 5931008 7340032 8388608 10379264 11862016 14680064 16777216 20758528 23724032 29360128 41517056 47448064 58720256 83034112 94896128 117440512 166068224 189792256 332136448 379584512 664272896 759169024 1328545792 1518338048 2657091584 3036676096 5314183168 10628366336 21256732672
• Sum of all divisors σ(n): 48855251536
• Sum of proper divisors (its aliquot sum) s(n): 27598518864
• 21256732672 is an abundant number, because the sum of its proper divisors (27598518864) is greater than itself. Its abundance is 6341786192

Bases of 21256732672

• Binary: 10011110011000000000000000000000000₂
• Hexadecimal: 0x4F3000000
• Base-36: 9RJPJWG

Squares and roots of 21256732672

• 21256732672 squared (21256732672²) is 451848683888872259584
• 21256732672 cubed (21256732672³) is 9604826681620790977533677928448
• The square root of 21256732672 is 145796.8884167285
• The cube root of 21256732672 is 2770.1216206425

Scales and comparisons

• 21,256,732,672 seconds is equal to 675 years, 46 weeks, 4 days, 23 hours, 57 minutes, 52 seconds.
• To count from 1 to 21,256,732,672 would take you about one thousand, three hundred fifty-one 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 21256732672 cubic inches would be around 230.8 feet tall.

Recreational maths with 21256732672

• 21256732672 backwards is 27623765212
• The number of decimal digits it has is: 11
• The sum of 21256732672's digits is 43
• More coming soon!