28013130920

Names of 28013130920

• Cardinal: 28013130920 can be written as Twenty-eight billion, thirteen million, one hundred thirty thousand, nine hundred twenty.

Scientific notation

• Scientific notation: 2.801313092 × 10¹⁰

Factors of 28013130920

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 148618

Divisors of 28013130920

• Number of divisors d(n): 64
• Complete list of divisors:
  1 2 4 5 8 10 20 40 53 89 106 178 212 265 356 424 445 530 712 890 1060 1780 2120 3560 4717 9434 18868 23585 37736 47170 94340 148469 188680 296938 593876 742345 1187752 1484690 2969380 5938760 7868857 13213741 15737714 26427482 31475428 39344285 52854964 62950856 66068705 78688570 105709928 132137410 157377140 264274820 314754280 528549640 700328273 1400656546 2801313092 3501641365 5602626184 7003282730 14006565460 28013130920
• Sum of all divisors σ(n): 64940778000
• Sum of proper divisors (its aliquot sum) s(n): 36927647080
• 28013130920 is an abundant number, because the sum of its proper divisors (36927647080) is greater than itself. Its abundance is 8914516160

Bases of 28013130920

• Binary: 11010000101101101100111010010101000₂
• Hexadecimal: 0x685B674A8
• Base-36: CVAAM5K

Squares and roots of 28013130920

• 28013130920 squared (28013130920²) is 784735503941060046400
• 28013130920 cubed (28013130920³) is 21982898409473091043384474688000
• The square root of 28013130920 is 167371.2368359629
• The cube root of 28013130920 is 3037.0635787269

Scales and comparisons

• 28,013,130,920 seconds is equal to 890 years, 38 weeks, 1 hour, 15 minutes, 20 seconds.
• To count from 1 to 28,013,130,920 would take you about one thousand, seven hundred eighty-one 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 28013130920 cubic inches would be around 253.1 feet tall.

Recreational maths with 28013130920

• 28013130920 backwards is 02903131082
• The number of decimal digits it has is: 11
• The sum of 28013130920's digits is 29
• More coming soon!