21172144740

Names of 21172144740

• Cardinal: 21172144740 can be written as Twenty-one billion, one hundred seventy-two million, one hundred forty-four thousand, seven hundred forty.

Scientific notation

• Scientific notation: 2.117214474 × 10¹⁰

Factors of 21172144740

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 980

Divisors of 21172144740

• Number of divisors d(n): 192
• Complete list of divisors:
  1 2 3 4 5 6 10 12 15 20 30 60 61 73 109 122 146 183 218 219 244 292 305 327 365 366 436 438 545 610 654 727 730 732 876 915 1090 1095 1220 1308 1454 1460 1635 1830 2180 2181 2190 2908 3270 3635 3660 4362 4380 4453 6540 6649 7270 7957 8724 8906 10905 13298 13359 14540 15914 17812 19947 21810 22265 23871 26596 26718 31828 33245 39785 39894 43620 44347 44530 47742 53071 53436 66490 66795 79243 79570 79788 88694 89060 95484 99735 106142 119355 132980 133041 133590 158486 159140 159213 177388 199470 212284 221735 237729 238710 265355 266082 267180 316972 318426 396215 398940 443470 475458 477420 485377 530710 532164 636852 665205 792430 796065 886940 950916 970754 1061420 1188645 1330410 1456131 1584860 1592130 1941508 2377290 2426885 2660820 2912262 3184260 3237331 4754580 4833823 4853770 5784739 5824524 6474662 7280655 9667646 9707540 9711993 11569478 12949324 14501469 14561310 16186655 17354217 19335292 19423986 23138956 24169115 28923695 29002938 29122620 32373310 34708434 38847972 48338230 48559965 57847390 58005876 64746620 69416868 72507345 86771085 96676460 97119930 115694780 145014690 173542170 194239860 290029380 347084340 352869079 705738158 1058607237 1411476316 1764345395 2117214474 3528690790 4234428948 5293036185 7057381580 10586072370 21172144740
• Sum of all divisors σ(n): 61724382720
• Sum of proper divisors (its aliquot sum) s(n): 40552237980
• 21172144740 is an abundant number, because the sum of its proper divisors (40552237980) is greater than itself. Its abundance is 19380093240

Bases of 21172144740

• Binary: 10011101101111101010100101001100100₂
• Hexadecimal: 0x4EDF54A64
• Base-36: 9Q5CJFO

Squares and roots of 21172144740

• 21172144740 squared (21172144740²) is 448259712891509667600
• 21172144740 cubed (21172144740³) is 9490619522449886599536488424000
• The square root of 21172144740 is 145506.5109883405
• The cube root of 21172144740 is 2766.4423101241

Scales and comparisons

• 21,172,144,740 seconds is equal to 673 years, 10 weeks, 5 days, 23 hours, 19 minutes.
• To count from 1 to 21,172,144,740 would take you about one thousand, three hundred forty-six 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 21172144740 cubic inches would be around 230.5 feet tall.

Recreational maths with 21172144740

• 21172144740 backwards is 04744127112
• The number of decimal digits it has is: 11
• The sum of 21172144740's digits is 33
• More coming soon!