19947489772

Names of 19947489772

• Cardinal: 19947489772 can be written as Nineteen billion, nine hundred forty-seven million, four hundred eighty-nine thousand, seven hundred seventy-two.

Scientific notation

• Scientific notation: 1.9947489772 × 10¹⁰

Factors of 19947489772

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 3147

Divisors of 19947489772

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 4 7 14 23 28 31 46 47 49 62 92 94 98 124 161 188 196 217 322 329 434 644 658 713 868 1081 1127 1316 1426 1457 1519 2162 2254 2303 2852 2914 3037 3038 4324 4508 4606 4991 5828 6074 6076 7567 9212 9982 10199 12148 15134 19964 20398 21259 30268 33511 34937 40796 42518 52969 67022 69851 69874 71393 85036 94147 105938 134044 139702 139748 142739 142786 148813 188294 211876 234577 279404 285478 285572 297626 376588 469154 488957 570956 595252 659029 938308 977914 999173 1318058 1642039 1955828 1998346 2165381 2636116 3282997 3284078 3422699 3996692 4330762 4424909 4613203 6565994 6568156 6845398 6994211 8661524 8849818 9226406 13131988 13690796 13988422 15157667 17699636 18452812 22980979 27976844 30315334 30974363 45961958 60630668 61948726 91923916 101772907 106103669 123897452 160866853 203545814 212207338 216820541 321733706 407091628 424414676 433641082 643467412 712410349 867282164 1424820698 2849641396 4986872443 9973744886 19947489772
• Sum of all divisors σ(n): 44685139968
• Sum of proper divisors (its aliquot sum) s(n): 24737650196
• 19947489772 is an abundant number, because the sum of its proper divisors (24737650196) is greater than itself. Its abundance is 4790160424

Bases of 19947489772

• Binary: 10010100100111101101000100111101100₂
• Hexadecimal: 0x4A4F689EC
• Base-36: 95W7XM4

Squares and roots of 19947489772

• 19947489772 squared (19947489772²) is 397902348204044611984
• 19947489772 cubed (19947489772³) is 7937153021054962466582548627648
• The square root of 19947489772 is 141235.5825279169
• The cube root of 19947489772 is 2712.0399563891

Scales and comparisons

• 19,947,489,772 seconds is equal to 634 years, 13 weeks, 6 days, 17 hours, 22 minutes, 52 seconds.
• To count from 1 to 19,947,489,772 would take you about one thousand, two hundred sixty-eight 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 19947489772 cubic inches would be around 226 feet tall.

Recreational maths with 19947489772

• 19947489772 backwards is 27798474991
• The number of decimal digits it has is: 11
• The sum of 19947489772's digits is 67
• More coming soon!