21082166742

Names of 21082166742

• Cardinal: 21082166742 can be written as Twenty-one billion, eighty-two million, one hundred sixty-six thousand, seven hundred forty-two.

Scientific notation

• Scientific notation: 2.1082166742 × 10¹⁰

Factors of 21082166742

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 1510

Divisors of 21082166742

• Number of divisors d(n): 128
• Complete list of divisors:
  1 2 3 6 7 13 14 21 26 39 42 78 89 91 178 182 267 273 467 534 546 623 929 934 1157 1246 1401 1858 1869 2314 2787 2802 3269 3471 3738 5574 6071 6503 6538 6942 8099 9807 12077 12142 13006 16198 18213 19509 19614 24154 24297 36231 36426 39018 41563 42497 48594 72462 82681 83126 84539 84994 124689 127491 165362 169078 248043 249378 253617 254982 290941 433843 496086 507234 540319 578767 581882 867686 872823 1074853 1080638 1157534 1301529 1620957 1736301 1745646 2149706 2603058 3036901 3224559 3241914 3472602 3782233 5639959 6073802 6449118 7523971 7564466 9110703 11279918 11346699 15047942 16919877 18221406 22571913 22693398 33839754 38612027 39479713 45143826 77224054 78959426 115836081 118439139 231672162 236878278 270284189 501956351 540568378 810852567 1003912702 1505869053 1621705134 3011738106 3513694457 7027388914 10541083371 21082166742
• Sum of all divisors σ(n): 52646630400
• Sum of proper divisors (its aliquot sum) s(n): 31564463658
• 21082166742 is an abundant number, because the sum of its proper divisors (31564463658) is greater than itself. Its abundance is 10482296916

Bases of 21082166742

• Binary: 10011101000100110000101010111010110₂
• Hexadecimal: 0x4E89855D6
• Base-36: 9ONRZYU

Squares and roots of 21082166742

• 21082166742 squared (21082166742²) is 444457754537490894564
• 21082166742 cubed (21082166742³) is 9370132490934290129504989390488
• The square root of 21082166742 is 145196.9928820843
• The cube root of 21082166742 is 2762.5177762673

Scales and comparisons

• 21,082,166,742 seconds is equal to 670 years, 18 weeks, 13 hours, 25 minutes, 42 seconds.
• To count from 1 to 21,082,166,742 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 21082166742 cubic inches would be around 230.2 feet tall.

Recreational maths with 21082166742

• 21082166742 backwards is 24766128012
• 21082166742 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21082166742's digits is 39
• More coming soon!