21333683920

Names of 21333683920

• Cardinal: 21333683920 can be written as Twenty-one billion, three hundred thirty-three million, six hundred eighty-three thousand, nine hundred twenty.

Scientific notation

• Scientific notation: 2.133368392 × 10¹⁰

Factors of 21333683920

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 38221

Divisors of 21333683920

• Number of divisors d(n): 40
• Complete list of divisors:
  1 2 4 5 8 10 16 20 40 80 9187 18374 29027 36748 45935 58054 73496 91870 116108 145135 146992 183740 232216 290270 367480 464432 580540 734960 1161080 2322160 266671049 533342098 1066684196 1333355245 2133368392 2666710490 4266736784 5333420980 10666841960 21333683920
• Sum of all divisors σ(n): 49607923104
• Sum of proper divisors (its aliquot sum) s(n): 28274239184
• 21333683920 is an abundant number, because the sum of its proper divisors (28274239184) is greater than itself. Its abundance is 6940555264

Bases of 21333683920

• Binary: 10011110111100101100010111011010000₂
• Hexadecimal: 0x4F7962ED0
• Base-36: 9STIVV4

Squares and roots of 21333683920

• 21333683920 squared (21333683920²) is 455126069598466566400
• 21333683920 cubed (21333683920³) is 9709515712565607044265292288000
• The square root of 21333683920 is 146060.5488145241
• The cube root of 21333683920 is 2773.4602900205

Scales and comparisons

• 21,333,683,920 seconds is equal to 678 years, 17 weeks, 6 days, 15 hours, 18 minutes, 40 seconds.
• To count from 1 to 21,333,683,920 would take you about one thousand, three hundred fifty-six 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 21333683920 cubic inches would be around 231.1 feet tall.

Recreational maths with 21333683920

• 21333683920 backwards is 02938633312
• 21333683920 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21333683920's digits is 40
• More coming soon!