21349211378

Names of 21349211378

• Cardinal: 21349211378 can be written as Twenty-one billion, three hundred forty-nine million, two hundred eleven thousand, three hundred seventy-eight.

Scientific notation

• Scientific notation: 2.1349211378 × 10¹⁰

Factors of 21349211378

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 5775

Divisors of 21349211378

• Number of divisors d(n): 64
• Complete list of divisors:
  1 2 11 22 31 62 71 79 142 158 341 682 781 869 1562 1738 2201 2449 4402 4898 5581 5609 11162 11218 24211 26939 48422 53878 61391 61699 122782 123398 173011 173879 346022 347758 396251 440899 792502 881798 1903121 1912669 3806242 3825338 4358761 4849889 8717522 9699778 12283781 13667869 24567562 27335738 31303829 62607658 135121591 150346559 270243182 300693118 344342119 688684238 970418699 1940837398 10674605689 21349211378
• Sum of all divisors σ(n): 37039472640
• Sum of proper divisors (its aliquot sum) s(n): 15690261262
• 21349211378 is a deficient number, because the sum of its proper divisors (15690261262) is less than itself. Its deficiency is 5658950116

Bases of 21349211378

• Binary: 10011111000100000110001110011110010₂
• Hexadecimal: 0x4F8831CF2
• Base-36: 9T2ROXE

Squares and roots of 21349211378

• 21349211378 squared (21349211378²) is 455788826462524658884
• 21349211378 cubed (21349211378³) is 9730731999878998938051861582152
• The square root of 21349211378 is 146113.6933281751
• The cube root of 21349211378 is 2774.1330030955

Scales and comparisons

• 21,349,211,378 seconds is equal to 678 years, 43 weeks, 4 days, 8 hours, 29 minutes, 38 seconds.
• To count from 1 to 21,349,211,378 would take you about one thousand, three hundred fifty-seven 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 21349211378 cubic inches would be around 231.2 feet tall.

Recreational maths with 21349211378

• 21349211378 backwards is 87311294312
• The number of decimal digits it has is: 11
• The sum of 21349211378's digits is 41
• More coming soon!