1428840

Names of 1428840

• Cardinal: 1428840 can be written as One million, four hundred twenty-eight thousand, eight hundred forty.

Scientific notation

• Scientific notation: 1.42884 × 10⁶

Factors of 1428840

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 17

Divisors of 1428840

• Number of divisors d(n): 168
• Complete list of divisors:
  1 2 3 4 5 6 7 8 9 10 12 14 15 18 20 21 24 27 28 30 35 36 40 42 45 49 54 56 60 63 70 72 81 84 90 98 105 108 120 126 135 140 147 162 168 180 189 196 210 216 243 245 252 270 280 294 315 324 360 378 392 405 420 441 486 490 504 540 567 588 630 648 729 735 756 810 840 882 945 972 980 1080 1134 1176 1215 1260 1323 1458 1470 1512 1620 1701 1764 1890 1944 1960 2205 2268 2430 2520 2646 2835 2916 2940 3240 3402 3528 3645 3780 3969 4410 4536 4860 5103 5292 5670 5832 5880 6615 6804 7290 7560 7938 8505 8820 9720 10206 10584 11340 11907 13230 13608 14580 15876 17010 17640 19845 20412 22680 23814 25515 26460 29160 31752 34020 35721 39690 40824 47628 51030 52920 59535 68040 71442 79380 95256 102060 119070 142884 158760 178605 204120 238140 285768 357210 476280 714420 1428840
• Sum of all divisors σ(n): 5607090
• Sum of proper divisors (its aliquot sum) s(n): 4178250
• 1428840 is an abundant number, because the sum of its proper divisors (4178250) is greater than itself. Its abundance is 2749410

Bases of 1428840

• Binary: 101011100110101101000₂
• Hexadecimal: 0x15CD68
• Base-36: UMI0

Squares and roots of 1428840

• 1428840 squared (1428840²) is 2041583745600
• 1428840 cubed (1428840³) is 2917096519063104000
• The square root of 1428840 is 1195.3409555437
• The cube root of 1428840 is 112.6318454221

Scales and comparisons

• 1,428,840 seconds is equal to 2 weeks, 2 days, 12 hours, 54 minutes.
• To count from 1 to 1,428,840 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 1428840 cubic inches would be around 9.4 feet tall.

Recreational maths with 1428840

• 1428840 backwards is 0488241
• 1428840 is a Harshad number.
• The number of decimal digits it has is: 7
• The sum of 1428840's digits is 27
• More coming soon!