21290724126

Names of 21290724126

• Cardinal: 21290724126 can be written as Twenty-one billion, two hundred ninety million, seven hundred twenty-four thousand, one hundred twenty-six.

Scientific notation

• Scientific notation: 2.1290724126 × 10¹⁰

Factors of 21290724126

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 631

Divisors of 21290724126

• Number of divisors d(n): 120
• Complete list of divisors:
  1 2 3 6 7 9 14 18 21 27 42 49 54 63 81 98 126 147 162 189 294 343 378 441 567 619 686 882 1029 1134 1238 1323 1857 2058 2646 3087 3714 3969 4333 5571 6174 7938 8666 9261 11142 12999 16713 18522 25998 27783 30331 33426 38997 50139 55566 60662 77994 90993 100278 116991 181986 212317 233982 272979 350973 383161 424634 545958 636951 701946 766322 818937 1149483 1273902 1637874 1910853 2298966 2456811 2682127 3448449 3821706 4913622 5364254 5732559 6896898 8046381 10345347 11465118 16092762 17197677 18774889 20690694 24139143 31036041 34395354 37549778 48278286 56324667 62072082 72417429 112649334 131424223 144834858 168974001 217252287 262848446 337948002 394272669 434504574 506922003 788545338 1013844006 1182818007 1520766009 2365636014 3041532018 3548454021 7096908042 10645362063 21290724126
• Sum of all divisors σ(n): 55725001200
• Sum of proper divisors (its aliquot sum) s(n): 34434277074
• 21290724126 is an abundant number, because the sum of its proper divisors (34434277074) is greater than itself. Its abundance is 13143552948

Bases of 21290724126

• Binary: 10011110101000001101010101100011110₂
• Hexadecimal: 0x4F506AB1E
• Base-36: 9S3Y3VI

Squares and roots of 21290724126

• 21290724126 squared (21290724126²) is 453294933809438463876
• 21290724126 cubed (21290724126³) is 9650977383450184589357132672376
• The square root of 21290724126 is 145913.4131120233
• The cube root of 21290724126 is 2771.5973933185

Scales and comparisons

• 21,290,724,126 seconds is equal to 676 years, 50 weeks, 6 days, 10 hours, 2 minutes, 6 seconds.
• To count from 1 to 21,290,724,126 would take you about one thousand, three hundred fifty-three 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 21290724126 cubic inches would be around 231 feet tall.

Recreational maths with 21290724126

• 21290724126 backwards is 62142709212
• The number of decimal digits it has is: 11
• The sum of 21290724126's digits is 36
• More coming soon!