19961640

Names of 19961640

• Cardinal: 19961640 can be written as Nineteen million, nine hundred sixty-one thousand, six hundred forty.

Scientific notation

• Scientific notation: 1.996164 × 10⁷

Factors of 19961640

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 172

Divisors of 19961640

• Number of divisors d(n): 160
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 18 20 24 27 30 36 40 45 54 60 61 72 81 90 101 108 120 122 135 162 180 183 202 216 244 270 303 305 324 360 366 404 405 488 505 540 549 606 610 648 732 808 810 909 915 1010 1080 1098 1212 1220 1464 1515 1620 1647 1818 1830 2020 2196 2424 2440 2727 2745 3030 3240 3294 3636 3660 4040 4392 4545 4941 5454 5490 6060 6161 6588 7272 7320 8181 8235 9090 9882 10908 10980 12120 12322 13176 13635 16362 16470 18180 18483 19764 21816 21960 24644 24705 27270 30805 32724 32940 36360 36966 39528 40905 49288 49410 54540 55449 61610 65448 65880 73932 81810 92415 98820 109080 110898 123220 147864 163620 166347 184830 197640 221796 246440 277245 327240 332694 369660 443592 499041 554490 665388 739320 831735 998082 1108980 1330776 1663470 1996164 2217960 2495205 3326940 3992328 4990410 6653880 9980820 19961640
• Sum of all divisors σ(n): 68868360
• Sum of proper divisors (its aliquot sum) s(n): 48906720
• 19961640 is an abundant number, because the sum of its proper divisors (48906720) is greater than itself. Its abundance is 28945080

Bases of 19961640

• Binary: 1001100001001011100101000₂
• Hexadecimal: 0x1309728
• Base-36: BVUI0

Squares and roots of 19961640

• 19961640 squared (19961640²) is 398467071489600
• 19961640 cubed (19961640³) is 7954056232929658944000
• The square root of 19961640 is 4467.8451181749
• The cube root of 19961640 is 271.2681088237

Scales and comparisons

• 19,961,640 seconds is equal to 33 weeks, 54 minutes.
• To count from 1 to 19,961,640 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 19961640 cubic inches would be around 22.6 feet tall.

Recreational maths with 19961640

• 19961640 backwards is 04616991
• 19961640 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 19961640's digits is 36
• More coming soon!