21320788307

Names of 21320788307

• Cardinal: 21320788307 can be written as Twenty-one billion, three hundred twenty million, seven hundred eighty-eight thousand, three hundred seven.

Scientific notation

• Scientific notation: 2.1320788307 × 10¹⁰

Factors of 21320788307

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 147

Divisors of 21320788307

• Number of divisors d(n): 64
• Complete list of divisors:
  1 7 13 19 41 67 91 133 247 287 469 533 779 871 1273 1729 2747 3731 4489 5453 6097 8911 10127 16549 19229 31423 35711 52193 58357 70889 85291 115843 184049 249977 300763 365351 408499 597037 678509 1108783 1288343 2105341 2392637 3496931 3909919 4749563 5714497 7761481 12331283 16748459 24478517 27369433 40001479 45460103 74288461 86318981 160306679 234294377 318220721 520019227 1122146753 1640060639 3045826901 21320788307
• Sum of all divisors σ(n): 28724505600
• Sum of proper divisors (its aliquot sum) s(n): 7403717293
• 21320788307 is a deficient number, because the sum of its proper divisors (7403717293) is less than itself. Its deficiency is 13917071014

Bases of 21320788307

• Binary: 10011110110110100010110100101010011₂
• Hexadecimal: 0x4F6D16953
• Base-36: 9SLUHJN

Squares and roots of 21320788307

• 21320788307 squared (21320788307²) is 454576014031907926249
• 21320788307 cubed (21320788307³) is 9691918964614170438870297570443
• The square root of 21320788307 is 146016.3973908411
• The cube root of 21320788307 is 2772.9013510903

Scales and comparisons

• 21,320,788,307 seconds is equal to 677 years, 48 weeks, 4 days, 9 hours, 11 minutes, 47 seconds.
• To count from 1 to 21,320,788,307 would take you about one thousand, three hundred fifty-five 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 21320788307 cubic inches would be around 231.1 feet tall.

Recreational maths with 21320788307

• 21320788307 backwards is 70388702312
• 21320788307 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21320788307's digits is 41
• More coming soon!