21209453264396790

Names of 21209453264396790

• Cardinal: 21209453264396790 can be written as Twenty-one quadrillion, two hundred nine trillion, four hundred fifty-three billion, two hundred sixty-four million, three hundred ninety-six thousand, seven hundred ninety.

Scientific notation

• Scientific notation: 2.120945326439679 × 10¹⁶

Factors of 21209453264396790

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 321

Divisors of 21209453264396790

• Number of divisors d(n): 168
• Complete list of divisors:
  1 2 3 5 6 9 10 15 18 27 30 45 54 81 90 135 162 243 270 311 405 486 622 729 810 933 1215 1458 1555 1866 2430 2799 3110 3645 4665 5598 7290 8397 9330 13995 16794 25191 27990 41985 50382 75573 83970 96721 125955 151146 193442 226719 251910 290163 377865 453438 483605 580326 755730 870489 967210 1133595 1450815 1740978 2267190 2611467 2901630 4352445 5222934 7834401 8704890 13057335 15668802 23503203 26114670 30080231 39172005 47006406 60160462 70509609 78344010 90240693 117516015 141019218 150401155 180481386 235032030 270722079 300802310 352548045 451203465 541444158 705096090 812166237 902406930 1353610395 1624332474 2436498711 2707220790 4060831185 4872997422 7309496133 8121662370 9354951841 12182493555 14618992266 18709903682 21928488399 24364987110 28064855523 36547480665 43856976798 46774759205 56129711046 73094961330 84194566569 93549518410 109642441995 140324277615 168389133138 219284883990 252583699707 280648555230 420972832845 505167399414 757751099121 841945665690 1262918498535 1515502198242 2273253297363 2525836997070 2909390022551 3788755495605 4546506594726 5818780045102 6819759892089 7577510991210 8728170067653 11366266486815 13639519784178 14546950112755 17456340135306 22732532973630 26184510202959 29093900225510 34098799460445 43640850338265 52369020405918 68197598920890 78553530608877 87281700676530 130922551014795 157107061217754 235660591826631 261845102029590 392767653044385 471321183653262 706981775479893 785535306088770 1178302959133155 1413963550959786 2120945326439679 2356605918266310 3534908877399465 4241890652879358 7069817754798930 10604726632198395 21209453264396790
• Sum of all divisors σ(n): 57423982333680144
• Sum of proper divisors (its aliquot sum) s(n): 36214529069283354
• 21209453264396790 is an abundant number, because the sum of its proper divisors (36214529069283354) is greater than itself. Its abundance is 15005075804886564

Bases of 21209453264396790

• Binary: 1001011010110011110001010100111101101000110000111110110₂
• Hexadecimal: 0x4B59E2A7B461F6
• Base-36: 5SU4GBHRLDI

Squares and roots of 21209453264396790

• 21209453264396790 squared (21209453264396790²) is 449840907774631651617402562304100
• 21209453264396790 cubed (21209453264396790³) is 9540879709859876633590325747307926268279043839000
• The square root of 21209453264396790 is 145634656.8107907137
• The cube root of 21209453264396790 is 276806.6319972579

Scales and comparisons

• 21,209,453,264,396,790 seconds is equal to 674,395,008 years, 34 weeks, 2 days, 17 hours, 46 minutes, 30 seconds.
• To count from 1 to 21,209,453,264,396,790 would take you about two billion, twenty-three million, one hundred eighty-five thousand and twenty-five 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 21209453264396790 cubic inches would be around 23067.2 feet tall.

Recreational maths with 21209453264396790

• 21209453264396790 backwards is 09769346235490212
• The number of decimal digits it has is: 17
• The sum of 21209453264396790's digits is 72
• More coming soon!