21356634848

Names of 21356634848

• Cardinal: 21356634848 can be written as Twenty-one billion, three hundred fifty-six million, six hundred thirty-four thousand, eight hundred forty-eight.

Scientific notation

• Scientific notation: 2.1356634848 × 10¹⁰

Factors of 21356634848

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 2807

Divisors of 21356634848

• Number of divisors d(n): 72
• Complete list of divisors:
  1 2 4 8 16 32 61 67 122 134 244 268 488 536 976 1072 1952 2144 2677 3721 4087 5354 7442 8174 10708 14884 16348 21416 29768 32696 42832 59536 65392 85664 119072 130784 163297 179359 249307 326594 358718 498614 653188 717436 997228 1306376 1434872 1994456 2612752 2869744 3988912 5225504 5739488 7977824 9961117 10940899 19922234 21881798 39844468 43763596 79688936 87527192 159377872 175054384 318755744 350108768 667394839 1334789678 2669579356 5339158712 10678317424 21356634848
• Sum of all divisors σ(n): 43400664216
• Sum of proper divisors (its aliquot sum) s(n): 22044029368
• 21356634848 is an abundant number, because the sum of its proper divisors (22044029368) is greater than itself. Its abundance is 687394520

Bases of 21356634848

• Binary: 10011111000111101000110001011100000₂
• Hexadecimal: 0x4F8F462E0
• Base-36: 9T76SWW

Squares and roots of 21356634848

• 21356634848 squared (21356634848²) is 456105852030807983104
• 21356634848 cubed (21356634848³) is 9740886133857885341555481608192
• The square root of 21356634848 is 146139.0941808519
• The cube root of 21356634848 is 2774.4545029751

Scales and comparisons

• 21,356,634,848 seconds is equal to 679 years, 3 weeks, 6 days, 6 hours, 34 minutes, 8 seconds.
• To count from 1 to 21,356,634,848 would take you about one thousand, three hundred fifty-eight 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 21356634848 cubic inches would be around 231.2 feet tall.

Recreational maths with 21356634848

• 21356634848 backwards is 84843665312
• The number of decimal digits it has is: 11
• The sum of 21356634848's digits is 50
• More coming soon!