21379710780

Names of 21379710780

• Cardinal: 21379710780 can be written as Twenty-one billion, three hundred seventy-nine million, seven hundred ten thousand, seven hundred eighty.

Scientific notation

• Scientific notation: 2.137971078 × 10¹⁰

Factors of 21379710780

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 141188

Divisors of 21379710780

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 3 4 5 6 9 10 12 15 18 20 27 30 36 45 54 60 90 108 135 180 270 281 540 562 843 1124 1405 1686 2529 2810 3372 4215 5058 5620 7587 8430 10116 12645 15174 16860 25290 30348 37935 50580 75870 140897 151740 281794 422691 563588 704485 845382 1268073 1408970 1690764 2113455 2536146 2817940 3804219 4226910 5072292 6340365 7608438 8453820 12680730 15216876 19021095 25361460 38042190 39592057 76084380 79184114 118776171 158368228 197960285 237552342 356328513 395920570 475104684 593880855 712657026 791841140 1068985539 1187761710 1425314052 1781642565 2137971078 2375523420 3563285130 4275942156 5344927695 7126570260 10689855390 21379710780
• Sum of all divisors σ(n): 66751836480
• Sum of proper divisors (its aliquot sum) s(n): 45372125700
• 21379710780 is an abundant number, because the sum of its proper divisors (45372125700) is greater than itself. Its abundance is 23992414920

Bases of 21379710780

• Binary: 10011111010010101000111111100111100₂
• Hexadecimal: 0x4FA547F3C
• Base-36: 9TKXEF0

Squares and roots of 21379710780

• 21379710780 squared (21379710780²) is 457092033036448208400
• 21379710780 cubed (21379710780³) is 9772495466161467894041166552000
• The square root of 21379710780 is 146218.0248122647
• The cube root of 21379710780 is 2775.4534131285

Scales and comparisons

• 21,379,710,780 seconds is equal to 679 years, 42 weeks, 8 hours, 33 minutes.
• To count from 1 to 21,379,710,780 would take you about one thousand, three hundred fifty-nine 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 21379710780 cubic inches would be around 231.3 feet tall.

Recreational maths with 21379710780

• 21379710780 backwards is 08701797312
• 21379710780 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21379710780's digits is 45
• More coming soon!