28142722920

Names of 28142722920

• Cardinal: 28142722920 can be written as Twenty-eight billion, one hundred forty-two million, seven hundred twenty-two thousand, nine hundred twenty.

Scientific notation

• Scientific notation: 2.814272292 × 10¹⁰

Factors of 28142722920

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 18040230

Divisors of 28142722920

• Number of divisors d(n): 64
• Complete list of divisors:
  1 2 3 4 5 6 8 10 12 13 15 20 24 26 30 39 40 52 60 65 78 104 120 130 156 195 260 312 390 520 780 1560 18040207 36080414 54120621 72160828 90201035 108241242 144321656 180402070 216482484 234522691 270603105 360804140 432964968 469045382 541206210 703568073 721608280 938090764 1082412420 1172613455 1407136146 1876181528 2164824840 2345226910 2814272292 3517840365 4690453820 5628544584 7035680730 9380907640 14071361460 28142722920
• Sum of all divisors σ(n): 90922648320
• Sum of proper divisors (its aliquot sum) s(n): 62779925400
• 28142722920 is an abundant number, because the sum of its proper divisors (62779925400) is greater than itself. Its abundance is 34637202480

Bases of 28142722920

• Binary: 11010001101011011111101111101101000₂
• Hexadecimal: 0x68D6FDF68
• Base-36: CXFG7ZC

Squares and roots of 28142722920

• 28142722920 squared (28142722920²) is 792012853351893326400
• 28142722920 cubed (28142722920³) is 22289398280960927142272321088000
• The square root of 28142722920 is 167757.9295294265
• The cube root of 28142722920 is 3041.7396451655

Scales and comparisons

• 28,142,722,920 seconds is equal to 894 years, 44 weeks, 1 day, 23 hours, 2 minutes.
• To count from 1 to 28,142,722,920 would take you about one thousand, seven hundred eighty-nine 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 28142722920 cubic inches would be around 253.5 feet tall.

Recreational maths with 28142722920

• 28142722920 backwards is 02922724182
• 28142722920 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 28142722920's digits is 39
• More coming soon!