21126639744

Names of 21126639744

• Cardinal: 21126639744 can be written as Twenty-one billion, one hundred twenty-six million, six hundred thirty-nine thousand, seven hundred forty-four.

Scientific notation

• Scientific notation: 2.1126639744 × 10¹⁰

Factors of 21126639744

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 2619883

Divisors of 21126639744

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 3 4 6 7 8 9 12 14 16 18 21 24 28 32 36 42 48 56 63 64 72 84 96 112 126 128 144 168 192 224 252 288 336 384 448 504 576 672 896 1008 1152 1344 2016 2688 4032 8064 2619871 5239742 7859613 10479484 15719226 18339097 20958968 23578839 31438452 36678194 41917936 47157678 55017291 62876904 73356388 83835872 94315356 110034582 125753808 146712776 165051873 167671744 188630712 220069164 251507616 293425552 330103746 335343488 377261424 440138328 503015232 586851104 660207492 754522848 880276656 1006030464 1173702208 1320414984 1509045696 1760553312 2347404416 2640829968 3018091392 3521106624 5281659936 7042213248 10563319872 21126639744
• Sum of all divisors σ(n): 69479005440
• Sum of proper divisors (its aliquot sum) s(n): 48352365696
• 21126639744 is an abundant number, because the sum of its proper divisors (48352365696) is greater than itself. Its abundance is 27225725952

Bases of 21126639744

• Binary: 10011101011001111101111000010000000₂
• Hexadecimal: 0x4EB3EF080
• Base-36: 9PE97K0

Squares and roots of 21126639744

• 21126639744 squared (21126639744²) is 446334906872760385536
• 21126639744 cubed (21126639744³) is 9429556782672598312053620342784
• The square root of 21126639744 is 145350.0593188733
• The cube root of 21126639744 is 2764.4589298435

Scales and comparisons

• 21,126,639,744 seconds is equal to 671 years, 39 weeks, 4 days, 7 hours, 2 minutes, 24 seconds.
• To count from 1 to 21,126,639,744 would take you about one thousand, three hundred forty-three 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 21126639744 cubic inches would be around 230.4 feet tall.

Recreational maths with 21126639744

• 21126639744 backwards is 44793662112
• The number of decimal digits it has is: 11
• The sum of 21126639744's digits is 45
• More coming soon!