1385280

Names of 1385280

• Cardinal: 1385280 can be written as One million, three hundred eighty-five thousand, two hundred eighty.

Scientific notation

• Scientific notation: 1.38528 × 10⁶

Factors of 1385280

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 60

Divisors of 1385280

• Number of divisors d(n): 168
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 13 15 16 18 20 24 26 30 32 36 37 39 40 45 48 52 60 64 65 72 74 78 80 90 96 104 111 117 120 130 144 148 156 160 180 185 192 195 208 222 234 240 260 288 296 312 320 333 360 370 390 416 444 468 480 481 520 555 576 585 592 624 666 720 740 780 832 888 936 960 962 1040 1110 1170 1184 1248 1332 1440 1443 1480 1560 1665 1776 1872 1924 2080 2220 2340 2368 2405 2496 2664 2880 2886 2960 3120 3330 3552 3744 3848 4160 4329 4440 4680 4810 5328 5772 5920 6240 6660 7104 7215 7488 7696 8658 8880 9360 9620 10656 11544 11840 12480 13320 14430 15392 17316 17760 18720 19240 21312 21645 23088 26640 28860 30784 34632 35520 37440 38480 43290 46176 53280 57720 69264 76960 86580 92352 106560 115440 138528 153920 173160 230880 277056 346320 461760 692640 1385280
• Sum of all divisors σ(n): 5269992
• Sum of proper divisors (its aliquot sum) s(n): 3884712
• 1385280 is an abundant number, because the sum of its proper divisors (3884712) is greater than itself. Its abundance is 2499432

Bases of 1385280

• Binary: 101010010001101000000₂
• Hexadecimal: 0x152340
• Base-36: TOW0

Squares and roots of 1385280

• 1385280 squared (1385280²) is 1919000678400
• 1385280 cubed (1385280³) is 2658353259773952000
• The square root of 1385280 is 1176.9791841829
• The cube root of 1385280 is 111.4754381605

Scales and comparisons

• 1,385,280 seconds is equal to 2 weeks, 2 days, 48 minutes.
• To count from 1 to 1,385,280 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 1385280 cubic inches would be around 9.3 feet tall.

Recreational maths with 1385280

• 1385280 backwards is 0825831
• The number of decimal digits it has is: 7
• The sum of 1385280's digits is 27
• More coming soon!