4891791872

Names of 4891791872

• Cardinal: 4891791872 can be written as Four billion, eight hundred ninety-one million, seven hundred ninety-one thousand, eight hundred seventy-two.

Scientific notation

• Scientific notation: 4.891791872 × 10⁹

Factors of 4891791872

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 294

Divisors of 4891791872

• Number of divisors d(n): 90
• Complete list of divisors:
  1 2 4 8 11 16 22 32 44 64 88 121 128 176 242 256 281 352 484 512 562 704 968 1124 1408 1936 2248 2816 3091 3872 4496 5632 6182 7744 8992 12364 15488 17984 24728 30976 34001 35968 49456 61952 68002 71936 78961 98912 136004 143872 157922 197824 272008 315844 395648 544016 631688 791296 868571 1088032 1263376 1582592 1737142 2176064 2526752 3474284 4352128 5053504 6948568 8704256 9554281 10107008 13897136 17408512 19108562 20214016 27794272 38217124 40428032 55588544 76434248 111177088 152868496 222354176 305736992 444708352 611473984 1222947968 2445895936 4891791872
• Sum of all divisors σ(n): 10781723337
• Sum of proper divisors (its aliquot sum) s(n): 5889931465
• 4891791872 is an abundant number, because the sum of its proper divisors (5889931465) is greater than itself. Its abundance is 998139593

Bases of 4891791872

• Binary: 100100011100100101101001000000000₂
• Hexadecimal: 0x12392D200
• Base-36: 28WG2RK

Squares and roots of 4891791872

• 4891791872 squared (4891791872²) is 23929627718965264384
• 4891791872 cubed (4891791872³) is 117058758375620180563982286848
• The square root of 4891791872 is 69941.3459407235
• The cube root of 4891791872 is 1697.5503208729

Scales and comparisons

• 4,891,791,872 seconds is equal to 155 years, 28 weeks, 1 day, 23 hours, 4 minutes, 32 seconds.
• To count from 1 to 4,891,791,872 would take you about three hundred eleven 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 4891791872 cubic inches would be around 141.5 feet tall.

Recreational maths with 4891791872

• 4891791872 backwards is 2781971984
• The number of decimal digits it has is: 10
• The sum of 4891791872's digits is 56
• More coming soon!