3881161728

Names of 3881161728

• Cardinal: 3881161728 can be written as Three billion, eight hundred eighty-one million, one hundred sixty-one thousand, seven hundred twenty-eight.

Scientific notation

• Scientific notation: 3.881161728 × 10⁹

Factors of 3881161728

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 421138

Divisors of 3881161728

• Number of divisors d(n): 66
• Complete list of divisors:
  1 2 3 4 6 8 9 12 16 18 24 32 36 48 64 72 96 128 144 192 256 288 384 512 576 768 1024 1152 1536 2304 3072 4608 9216 421133 842266 1263399 1684532 2526798 3369064 3790197 5053596 6738128 7580394 10107192 13476256 15160788 20214384 26952512 30321576 40428768 53905024 60643152 80857536 107810048 121286304 161715072 215620096 242572608 323430144 431240192 485145216 646860288 970290432 1293720576 1940580864 3881161728
• Sum of all divisors σ(n): 11206796874
• Sum of proper divisors (its aliquot sum) s(n): 7325635146
• 3881161728 is an abundant number, because the sum of its proper divisors (7325635146) is greater than itself. Its abundance is 3444473418

Bases of 3881161728

• Binary: 11100111010101011101010000000000₂
• Hexadecimal: 0xE755D400
• Base-36: 1S6QRK0

Squares and roots of 3881161728

• 3881161728 squared (3881161728²) is 15063416358891945984
• 3881161728 cubed (3881161728³) is 58463555065060533240544100352
• The square root of 3881161728 is 62298.9705211891
• The cube root of 3881161728 is 1571.5224157669

Scales and comparisons

• 3,881,161,728 seconds is equal to 123 years, 21 weeks, 1 day, 20 hours, 28 minutes, 48 seconds.
• To count from 1 to 3,881,161,728 would take you about two hundred forty-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 3881161728 cubic inches would be around 131 feet tall.

Recreational maths with 3881161728

• 3881161728 backwards is 8271611883
• The number of decimal digits it has is: 10
• The sum of 3881161728's digits is 45
• More coming soon!