21402651690

Names of 21402651690

• Cardinal: 21402651690 can be written as Twenty-one billion, four hundred two million, six hundred fifty-one thousand, six hundred ninety.

Scientific notation

• Scientific notation: 2.140265169 × 10¹⁰

Factors of 21402651690

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 2220

Divisors of 21402651690

• Number of divisors d(n): 108
• Complete list of divisors:
  1 2 3 5 6 7 9 10 14 15 18 21 30 35 42 45 49 63 70 90 98 105 126 147 210 245 294 315 441 490 630 735 882 1470 2203 2205 4406 4410 6609 11015 13218 15421 19827 22030 30842 33045 39654 46263 66090 77105 92526 99135 107947 138789 154210 198270 215894 231315 277578 323841 462630 539735 647682 693945 971523 1079470 1387890 1619205 1943046 3238410 4853209 4857615 9706418 9715230 14559627 24266045 29119254 33972463 43678881 48532090 67944926 72798135 87357762 101917389 145596270 169862315 203834778 218394405 237807241 305752167 339724630 436788810 475614482 509586945 611504334 713421723 1019173890 1189036205 1426843446 1528760835 2140265169 2378072410 3057521670 3567108615 4280530338 7134217230 10701325845 21402651690
• Sum of all divisors σ(n): 64761498594
• Sum of proper divisors (its aliquot sum) s(n): 43358846904
• 21402651690 is an abundant number, because the sum of its proper divisors (43358846904) is greater than itself. Its abundance is 21956195214

Bases of 21402651690

• Binary: 10011111011101100101000110000101010₂
• Hexadecimal: 0x4FBB28C2A
• Base-36: 9TYL3QI

Squares and roots of 21402651690

• 21402651690 squared (21402651690²) is 458073499363459856100
• 21402651690 cubed (21402651690³) is 9803987555295568013405821809000
• The square root of 21402651690 is 146296.4513923697
• The cube root of 21402651690 is 2776.4457662303

Scales and comparisons

• 21,402,651,690 seconds is equal to 680 years, 27 weeks, 6 days, 21 hours, 1 minute, 30 seconds.
• To count from 1 to 21,402,651,690 would take you about one thousand, three hundred sixty-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 21402651690 cubic inches would be around 231.4 feet tall.

Recreational maths with 21402651690

• 21402651690 backwards is 09615620412
• The number of decimal digits it has is: 11
• The sum of 21402651690's digits is 36
• More coming soon!