21139282040

Names of 21139282040

• Cardinal: 21139282040 can be written as Twenty-one billion, one hundred thirty-nine million, two hundred eighty-two thousand and forty.

Scientific notation

• Scientific notation: 2.113928204 × 10¹⁰

Factors of 21139282040

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 8996

Divisors of 21139282040

• Number of divisors d(n): 64
• Complete list of divisors:
  1 2 4 5 8 10 20 29 40 58 116 145 232 290 580 1160 3121 5839 6242 11678 12484 15605 23356 24968 29195 31210 46712 58390 62420 90509 116780 124840 169331 181018 233560 338662 362036 452545 677324 724072 846655 905090 1354648 1693310 1810180 3386620 3620360 6773240 18223519 36447038 72894076 91117595 145788152 182235190 364470380 528482051 728940760 1056964102 2113928204 2642410255 4227856408 5284820510 10569641020 21139282040
• Sum of all divisors σ(n): 49227696000
• Sum of proper divisors (its aliquot sum) s(n): 28088413960
• 21139282040 is an abundant number, because the sum of its proper divisors (28088413960) is greater than itself. Its abundance is 6949131920

Bases of 21139282040

• Binary: 10011101011111111111101100001111000₂
• Hexadecimal: 0x4EBFFD878
• Base-36: 9PLS6EW

Squares and roots of 21139282040

• 21139282040 squared (21139282040²) is 446869245166666561600
• 21139282040 cubed (21139282040³) is 9446495008580071252299433664000
• The square root of 21139282040 is 145393.5419473643
• The cube root of 21139282040 is 2765.0102423029

Scales and comparisons

• 21,139,282,040 seconds is equal to 672 years, 8 weeks, 3 days, 14 hours, 47 minutes, 20 seconds.
• To count from 1 to 21,139,282,040 would take you about one thousand, three hundred forty-four 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 21139282040 cubic inches would be around 230.4 feet tall.

Recreational maths with 21139282040

• 21139282040 backwards is 04028293112
• The number of decimal digits it has is: 11
• The sum of 21139282040's digits is 32
• More coming soon!