21355236224

Names of 21355236224

• Cardinal: 21355236224 can be written as Twenty-one billion, three hundred fifty-five million, two hundred thirty-six thousand, two hundred twenty-four.

Scientific notation

• Scientific notation: 2.1355236224 × 10¹⁰

Factors of 21355236224

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 821899

Divisors of 21355236224

• Number of divisors d(n): 64
• Complete list of divisors:
  1 2 4 7 8 14 16 28 29 32 56 58 64 112 116 128 203 224 232 406 448 464 812 896 928 1624 1856 3248 3712 6496 12992 25984 821861 1643722 3287444 5753027 6574888 11506054 13149776 23012108 23833969 26299552 46024216 47667938 52599104 92048432 95335876 105198208 166837783 184096864 190671752 333675566 368193728 381343504 667351132 736387456 762687008 1334702264 1525374016 2669404528 3050748032 5338809056 10677618112 21355236224
• Sum of all divisors σ(n): 50297954400
• Sum of proper divisors (its aliquot sum) s(n): 28942718176
• 21355236224 is an abundant number, because the sum of its proper divisors (28942718176) is greater than itself. Its abundance is 7587481952

Bases of 21355236224

• Binary: 10011111000110111110000101110000000₂
• Hexadecimal: 0x4F8DF0B80
• Base-36: 9T6CTQ8

Squares and roots of 21355236224

• 21355236224 squared (21355236224²) is 456046114182841778176
• 21355236224 cubed (21355236224³) is 9738972497411862900564687847424
• The square root of 21355236224 is 146134.3088531917
• The cube root of 21355236224 is 2774.3939362645

Scales and comparisons

• 21,355,236,224 seconds is equal to 679 years, 1 week, 4 days, 2 hours, 3 minutes, 44 seconds.
• To count from 1 to 21,355,236,224 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 21355236224 cubic inches would be around 231.2 feet tall.

Recreational maths with 21355236224

• 21355236224 backwards is 42263255312
• The number of decimal digits it has is: 11
• The sum of 21355236224's digits is 35
• More coming soon!