19986816

Names of 19986816

• Cardinal: 19986816 can be written as Nineteen million, nine hundred eighty-six thousand, eight hundred sixteen.

Scientific notation

• Scientific notation: 1.9986816 × 10⁷

Factors of 19986816

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 132

Divisors of 19986816

• Number of divisors d(n): 128
• Complete list of divisors:
  1 2 3 4 6 8 12 16 23 24 31 32 46 48 62 64 69 73 92 93 96 124 128 138 146 184 186 192 219 248 276 292 368 372 384 438 496 552 584 713 736 744 876 992 1104 1168 1426 1472 1488 1679 1752 1984 2139 2208 2263 2336 2852 2944 2976 3358 3504 3968 4278 4416 4526 4672 5037 5704 5952 6716 6789 7008 8556 8832 9052 9344 10074 11408 11904 13432 13578 14016 17112 18104 20148 22816 26864 27156 28032 34224 36208 40296 45632 52049 53728 54312 68448 72416 80592 91264 104098 107456 108624 136896 144832 156147 161184 208196 214912 217248 273792 289664 312294 322368 416392 434496 624588 644736 832784 868992 1249176 1665568 2498352 3331136 4996704 6662272 9993408 19986816
• Sum of all divisors σ(n): 57968640
• Sum of proper divisors (its aliquot sum) s(n): 37981824
• 19986816 is an abundant number, because the sum of its proper divisors (37981824) is greater than itself. Its abundance is 17995008

Bases of 19986816

• Binary: 1001100001111100110000000₂
• Hexadecimal: 0x130F980
• Base-36: BWDXC

Squares and roots of 19986816

• 19986816 squared (19986816²) is 399472813817856
• 19986816 cubed (19986816³) is 7984189626779745386496
• The square root of 19986816 is 4470.6616959909
• The cube root of 19986816 is 271.3821037457

Scales and comparisons

• 19,986,816 seconds is equal to 33 weeks, 7 hours, 53 minutes, 36 seconds.
• To count from 1 to 19,986,816 would take you about forty-nine weeks!

  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 19986816 cubic inches would be around 22.6 feet tall.

Recreational maths with 19986816

• 19986816 backwards is 61868991
• 19986816 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 19986816's digits is 48
• More coming soon!