1998688440

Names of 1998688440

• Cardinal: 1998688440 can be written as One billion, nine hundred ninety-eight million, six hundred eighty-eight thousand, four hundred forty.

Scientific notation

• Scientific notation: 1.99868844 × 10⁹

Factors of 1998688440

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 1008

Divisors of 1998688440

• Number of divisors d(n): 192
• Complete list of divisors:
  1 2 3 4 5 6 7 8 10 12 14 15 20 21 24 28 30 35 40 42 49 56 60 70 84 98 105 120 140 147 168 196 210 245 280 294 343 392 420 490 588 686 735 840 980 991 1029 1176 1372 1470 1715 1960 1982 2058 2401 2744 2940 2973 3430 3964 4116 4802 4955 5145 5880 5946 6860 6937 7203 7928 8232 9604 9910 10290 11892 12005 13720 13874 14406 14865 16807 19208 19820 20580 20811 23784 24010 27748 28812 29730 33614 34685 36015 39640 41160 41622 48020 48559 50421 55496 57624 59460 67228 69370 72030 83244 84035 96040 97118 100842 104055 118920 134456 138740 144060 145677 166488 168070 194236 201684 208110 242795 252105 277480 288120 291354 336140 339913 388472 403368 416220 485590 504210 582708 672280 679826 728385 832440 971180 1008420 1019739 1165416 1359652 1456770 1699565 1942360 2016840 2039478 2379391 2719304 2913540 3399130 4078956 4758782 5098695 5827080 6798260 7138173 8157912 9517564 10197390 11896955 13596520 14276346 16655737 19035128 20394780 23793910 28552692 33311474 35690865 40789560 47587820 49967211 57105384 66622948 71381730 83278685 95175640 99934422 133245896 142763460 166557370 199868844 249836055 285526920 333114740 399737688 499672110 666229480 999344220 1998688440
• Sum of all divisors σ(n): 7002408960
• Sum of proper divisors (its aliquot sum) s(n): 5003720520
• 1998688440 is an abundant number, because the sum of its proper divisors (5003720520) is greater than itself. Its abundance is 3005032080

Bases of 1998688440

• Binary: 1110111001000011001000010111000₂
• Hexadecimal: 0x772190B8
• Base-36: X1YTVC

Squares and roots of 1998688440

• 1998688440 squared (1998688440²) is 3994755480189633600
• 1998688440 cubed (1998688440³) is 7984271598881669684155584000
• The square root of 1998688440 is 44706.6934585863
• The cube root of 1998688440 is 1259.6455793281

Scales and comparisons

• 1,998,688,440 seconds is equal to 63 years, 28 weeks, 4 days, 23 hours, 14 minutes.
• To count from 1 to 1,998,688,440 would take you about one hundred twenty-seven 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 1998688440 cubic inches would be around 105 feet tall.

Recreational maths with 1998688440

• 1998688440 backwards is 0448868991
• The number of decimal digits it has is: 10
• The sum of 1998688440's digits is 57
• More coming soon!