21364744842

Names of 21364744842

• Cardinal: 21364744842 can be written as Twenty-one billion, three hundred sixty-four million, seven hundred forty-four thousand, eight hundred forty-two.

Scientific notation

• Scientific notation: 2.1364744842 × 10¹⁰

Factors of 21364744842

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 18840175

Divisors of 21364744842

• Number of divisors d(n): 40
• Complete list of divisors:
  1 2 3 6 7 9 14 18 21 27 42 54 63 81 126 162 189 378 567 1134 18840163 37680326 56520489 113040978 131881141 169561467 263762282 339122934 395643423 508684401 791286846 1017368802 1186930269 1526053203 2373860538 3052106406 3560790807 7121581614 10682372421 21364744842
• Sum of all divisors σ(n): 54711836256
• Sum of proper divisors (its aliquot sum) s(n): 33347091414
• 21364744842 is an abundant number, because the sum of its proper divisors (33347091414) is greater than itself. Its abundance is 11982346572

Bases of 21364744842

• Binary: 10011111001011100000010001010001010₂
• Hexadecimal: 0x4F970228A
• Base-36: 9TC0MMI

Squares and roots of 21364744842

• 21364744842 squared (21364744842²) is 456452322163765604964
• 21364744842 cubed (21364744842³) is 9751987395567233487951628595688
• The square root of 21364744842 is 146166.8390641325
• The cube root of 21364744842 is 2774.8056500847

Scales and comparisons

• 21,364,744,842 seconds is equal to 679 years, 17 weeks, 2 days, 3 hours, 20 minutes, 42 seconds.
• To count from 1 to 21,364,744,842 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 21364744842 cubic inches would be around 231.2 feet tall.

Recreational maths with 21364744842

• 21364744842 backwards is 24844746312
• The number of decimal digits it has is: 11
• The sum of 21364744842's digits is 45
• More coming soon!