21981635120

Names of 21981635120

• Cardinal: 21981635120 can be written as Twenty-one billion, nine hundred eighty-one million, six hundred thirty-five thousand, one hundred twenty.

Scientific notation

• Scientific notation: 2.198163512 × 10¹⁰

Factors of 21981635120

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 8112

Divisors of 21981635120

• Number of divisors d(n): 80
• Complete list of divisors:
  1 2 4 5 8 10 16 17 20 34 40 68 80 85 136 170 272 340 680 1360 3607 4481 7214 8962 14428 17924 18035 22405 28856 35848 36070 44810 57712 61319 71696 72140 76177 89620 122638 144280 152354 179240 245276 288560 304708 306595 358480 380885 490552 609416 613190 761770 981104 1218832 1226380 1523540 2452760 3047080 4905520 6094160 16162967 32325934 64651868 80814835 129303736 161629670 258607472 274770439 323259340 549540878 646518680 1099081756 1293037360 1373852195 2198163512 2747704390 4396327024 5495408780 10990817560 21981635120
• Sum of all divisors σ(n): 54140695488
• Sum of proper divisors (its aliquot sum) s(n): 32159060368
• 21981635120 is an abundant number, because the sum of its proper divisors (32159060368) is greater than itself. Its abundance is 10177425248

Bases of 21981635120

• Binary: 10100011110001101010010001000110000₂
• Hexadecimal: 0x51E352230
• Base-36: A3JAQ7K

Squares and roots of 21981635120

• 21981635120 squared (21981635120²) is 483192282548817414400
• 21981635120 cubed (21981635120³) is 10621356447788047990842633728000
• The square root of 21981635120 is 148262.0488189745
• The cube root of 21981635120 is 2801.2594300265

Scales and comparisons

• 21,981,635,120 seconds is equal to 698 years, 49 weeks, 2 days, 1 hour, 45 minutes, 20 seconds.
• To count from 1 to 21,981,635,120 would take you about one thousand, three hundred ninety-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 21981635120 cubic inches would be around 233.4 feet tall.

Recreational maths with 21981635120

• 21981635120 backwards is 02153618912
• The number of decimal digits it has is: 11
• The sum of 21981635120's digits is 38
• More coming soon!