12121920

Names of 12121920

• Cardinal: 12121920 can be written as Twelve million, one hundred twenty-one thousand, nine hundred twenty.

Scientific notation

• Scientific notation: 1.212192 × 10⁷

Factors of 12121920

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 94

Divisors of 12121920

• Number of divisors d(n): 224
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 16 18 20 23 24 27 30 32 36 40 45 46 48 54 60 61 64 69 72 80 90 92 96 108 115 120 122 135 138 144 160 180 183 184 192 207 216 230 240 244 270 276 288 305 320 345 360 366 368 414 432 460 480 488 540 549 552 576 610 621 690 720 732 736 828 864 915 920 960 976 1035 1080 1098 1104 1220 1242 1380 1403 1440 1464 1472 1647 1656 1728 1830 1840 1952 2070 2160 2196 2208 2440 2484 2745 2760 2806 2880 2928 3105 3294 3312 3660 3680 3904 4140 4209 4320 4392 4416 4880 4968 5490 5520 5612 5856 6210 6588 6624 7015 7320 7360 8235 8280 8418 8640 8784 9760 9936 10980 11040 11224 11712 12420 12627 13176 13248 14030 14640 16470 16560 16836 17568 19520 19872 21045 21960 22080 22448 24840 25254 26352 28060 29280 32940 33120 33672 35136 37881 39744 42090 43920 44896 49680 50508 52704 56120 58560 63135 65880 66240 67344 75762 84180 87840 89792 99360 101016 105408 112240 126270 131760 134688 151524 168360 175680 189405 198720 202032 224480 252540 263520 269376 303048 336720 378810 404064 448960 505080 527040 606096 673440 757620 808128 1010160 1212192 1346880 1515240 2020320 2424384 3030480 4040640 6060960 12121920
• Sum of all divisors σ(n): 45354240
• Sum of proper divisors (its aliquot sum) s(n): 33232320
• 12121920 is an abundant number, because the sum of its proper divisors (33232320) is greater than itself. Its abundance is 21110400

Bases of 12121920

• Binary: 101110001111011101000000₂
• Hexadecimal: 0xB8F740
• Base-36: 77TC0

Squares and roots of 12121920

• 12121920 squared (12121920²) is 146940944486400
• 12121920 cubed (12121920³) is 1781206373788581888000
• The square root of 12121920 is 3481.6547789809
• The cube root of 12121920 is 229.7155904837

Scales and comparisons

• 12,121,920 seconds is equal to 20 weeks, 7 hours, 12 minutes.
• To count from 1 to 12,121,920 would take you about thirty 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 12121920 cubic inches would be around 19.1 feet tall.

Recreational maths with 12121920

• 12121920 backwards is 02912121
• 12121920 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 12121920's digits is 18
• More coming soon!