1321920

Names of 1321920

• Cardinal: 1321920 can be written as One million, three hundred twenty-one thousand, nine hundred twenty.

Scientific notation

• Scientific notation: 1.32192 × 10⁶

Factors of 1321920

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 27

Divisors of 1321920

• Number of divisors d(n): 168
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 16 17 18 20 24 27 30 32 34 36 40 45 48 51 54 60 64 68 72 80 81 85 90 96 102 108 120 135 136 144 153 160 162 170 180 192 204 216 240 243 255 270 272 288 306 320 324 340 360 405 408 432 459 480 486 510 540 544 576 612 648 680 720 765 810 816 864 918 960 972 1020 1080 1088 1215 1224 1296 1360 1377 1440 1530 1620 1632 1728 1836 1944 2040 2160 2295 2430 2448 2592 2720 2754 2880 3060 3240 3264 3672 3888 4080 4131 4320 4590 4860 4896 5184 5440 5508 6120 6480 6885 7344 7776 8160 8262 8640 9180 9720 9792 11016 12240 12960 13770 14688 15552 16320 16524 18360 19440 20655 22032 24480 25920 27540 29376 33048 36720 38880 41310 44064 48960 55080 66096 73440 77760 82620 88128 110160 132192 146880 165240 220320 264384 330480 440640 660960 1321920
• Sum of all divisors σ(n): 4992624
• Sum of proper divisors (its aliquot sum) s(n): 3670704
• 1321920 is an abundant number, because the sum of its proper divisors (3670704) is greater than itself. Its abundance is 2348784

Bases of 1321920

• Binary: 101000010101111000000₂
• Hexadecimal: 0x142BC0
• Base-36: SC00

Squares and roots of 1321920

• 1321920 squared (1321920²) is 1747472486400
• 1321920 cubed (1321920³) is 2310018829221888000
• The square root of 1321920 is 1149.7477984323
• The cube root of 1321920 is 109.7492912853

Scales and comparisons

• 1,321,920 seconds is equal to 2 weeks, 1 day, 7 hours, 12 minutes.
• To count from 1 to 1,321,920 would take you about three 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 1321920 cubic inches would be around 9.1 feet tall.

Recreational maths with 1321920

• 1321920 backwards is 0291231
• 1321920 is a Harshad number.
• The number of decimal digits it has is: 7
• The sum of 1321920's digits is 18
• More coming soon!