21071715920

Names of 21071715920

• Cardinal: 21071715920 can be written as Twenty-one billion, seventy-one million, seven hundred fifteen thousand, nine hundred twenty.

Scientific notation

• Scientific notation: 2.107171592 × 10¹⁰

Factors of 21071715920

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 799

Divisors of 21071715920

• Number of divisors d(n): 160
• Complete list of divisors:
  1 2 4 5 8 10 16 19 20 38 40 76 80 95 152 181 190 191 304 362 380 382 401 724 760 764 802 905 955 1448 1520 1528 1604 1810 1910 2005 2896 3056 3208 3439 3620 3629 3820 4010 6416 6878 7240 7258 7619 7640 8020 13756 14480 14516 15238 15280 16040 17195 18145 27512 29032 30476 32080 34390 34571 36290 38095 55024 58064 60952 68780 69142 72580 72581 76190 76591 121904 137560 138284 145160 145162 152380 153182 172855 275120 276568 290320 290324 304760 306364 345710 362905 382955 553136 580648 609520 612728 656849 691420 725810 765910 1161296 1225456 1313698 1379039 1382840 1451620 1455229 1531820 2627396 2758078 2765680 2903240 2910458 3063640 3284245 5254792 5516156 5806480 5820916 6127280 6568490 6895195 7276145 10509584 11032312 11641832 13136980 13790390 13862971 14552290 22064624 23283664 26273960 27580780 27725942 29104580 52547920 55161560 55451884 58209160 69314855 110323120 110903768 116418320 138629710 221807536 263396449 277259420 526792898 554518840 1053585796 1109037680 1316982245 2107171592 2633964490 4214343184 5267928980 10535857960 21071715920
• Sum of all divisors σ(n): 52256655360
• Sum of proper divisors (its aliquot sum) s(n): 31184939440
• 21071715920 is an abundant number, because the sum of its proper divisors (31184939440) is greater than itself. Its abundance is 10113223520

Bases of 21071715920

• Binary: 10011100111111110001101111001010000₂
• Hexadecimal: 0x4E7F8DE50
• Base-36: 9OHK028

Squares and roots of 21071715920

• 21071715920 squared (21071715920²) is 444017211813181446400
• 21071715920 cubed (21071715920³) is 9356204550917827549955506688000
• The square root of 21071715920 is 145160.9999965557
• The cube root of 21071715920 is 2762.0612236787

Scales and comparisons

• 21,071,715,920 seconds is equal to 670 years, 5 days, 14 hours, 25 minutes, 20 seconds.
• To count from 1 to 21,071,715,920 would take you about one thousand, three hundred forty 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 21071715920 cubic inches would be around 230.2 feet tall.

Recreational maths with 21071715920

• 21071715920 backwards is 02951717012
• The number of decimal digits it has is: 11
• The sum of 21071715920's digits is 35
• More coming soon!