21149800812

Names of 21149800812

• Cardinal: 21149800812 can be written as Twenty-one billion, one hundred forty-nine million, eight hundred thousand, eight hundred twelve.

Scientific notation

• Scientific notation: 2.1149800812 × 10¹⁰

Factors of 21149800812

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 1332199

Divisors of 21149800812

• Number of divisors d(n): 90
• Complete list of divisors:
  1 2 3 4 6 7 9 12 14 18 21 27 28 36 42 49 54 63 81 84 98 108 126 147 162 189 196 252 294 324 378 441 567 588 756 882 1134 1323 1764 2268 2646 3969 5292 7938 15876 1332187 2664374 3996561 5328748 7993122 9325309 11989683 15986244 18650618 23979366 27975927 35969049 37301236 47958732 55951854 65277163 71938098 83927781 107907147 111903708 130554326 143876196 167855562 195831489 215814294 251783343 261108652 335711124 391662978 431628588 503566686 587494467 755350029 783325956 1007133372 1174988934 1510700058 1762483401 2349977868 3021400116 3524966802 5287450203 7049933604 10574900406 21149800812
• Sum of all divisors σ(n): 64316704452
• Sum of proper divisors (its aliquot sum) s(n): 43166903640
• 21149800812 is an abundant number, because the sum of its proper divisors (43166903640) is greater than itself. Its abundance is 22017102828

Bases of 21149800812

• Binary: 10011101100101000000101100101101100₂
• Hexadecimal: 0x4ECA0596C
• Base-36: 9PS1MR0

Squares and roots of 21149800812

• 21149800812 squared (21149800812²) is 447314074387275859344
• 21149800812 cubed (21149800812³) is 9460603573695035372421728987328
• The square root of 21149800812 is 145429.7108984267
• The cube root of 21149800812 is 2765.4687834129

Scales and comparisons

• 21,149,800,812 seconds is equal to 672 years, 25 weeks, 6 days, 8 hours, 40 minutes, 12 seconds.
• To count from 1 to 21,149,800,812 would take you about one thousand, three hundred forty-four 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 21149800812 cubic inches would be around 230.5 feet tall.

Recreational maths with 21149800812

• 21149800812 backwards is 21800894112
• 21149800812 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21149800812's digits is 36
• More coming soon!