21388477504

Names of 21388477504

• Cardinal: 21388477504 can be written as Twenty-one billion, three hundred eighty-eight million, four hundred seventy-seven thousand, five hundred four.

Scientific notation

• Scientific notation: 2.1388477504 × 10¹⁰

Factors of 21388477504

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 284

Divisors of 21388477504

• Number of divisors d(n): 63
• Complete list of divisors:
  1 2 4 8 16 32 64 101 181 202 362 404 724 808 1448 1616 2896 3232 5792 6464 10201 11584 18281 20402 32761 36562 40804 65522 73124 81608 131044 146248 163216 262088 292496 326432 524176 584992 652864 1048352 1169984 1846381 2096704 3308861 3692762 6617722 7385524 13235444 14771048 26470888 29542096 52941776 59084192 105883552 118168384 211767104 334194961 668389922 1336779844 2673559688 5347119376 10694238752 21388477504
• Sum of all divisors σ(n): 43105289583
• Sum of proper divisors (its aliquot sum) s(n): 21716812079
• 21388477504 is an abundant number, because the sum of its proper divisors (21716812079) is greater than itself. Its abundance is 328334575

Bases of 21388477504

• Binary: 10011111010110110100100010001000000₂
• Hexadecimal: 0x4FADA4440
• Base-36: 9TQ5AV4

Squares and roots of 21388477504

• 21388477504 squared (21388477504²) is 457466969939114070016
• 21388477504 cubed (21388477504³) is 9784521995365785536227096920064
• 21388477504 is a perfect square number. Its square root is 146248
• The cube root of 21388477504 is 2775.8327183703

Scales and comparisons

• 21,388,477,504 seconds is equal to 680 years, 4 weeks, 3 days, 19 hours, 45 minutes, 4 seconds.
• To count from 1 to 21,388,477,504 would take you about one thousand, three hundred sixty 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 21388477504 cubic inches would be around 231.3 feet tall.

Recreational maths with 21388477504

• 21388477504 backwards is 40577488312
• The number of decimal digits it has is: 11
• The sum of 21388477504's digits is 49
• More coming soon!