1421640

Names of 1421640

• Cardinal: 1421640 can be written as One million, four hundred twenty-one thousand, six hundred forty.

Scientific notation

• Scientific notation: 1.42164 × 10⁶

Factors of 1421640

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 380

Divisors of 1421640

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 11 12 15 18 20 22 24 30 33 36 40 44 45 55 60 66 72 88 90 99 110 120 132 165 180 198 220 264 330 359 360 396 440 495 660 718 792 990 1077 1320 1436 1795 1980 2154 2872 3231 3590 3949 3960 4308 5385 6462 7180 7898 8616 10770 11847 12924 14360 15796 16155 19745 21540 23694 25848 31592 32310 35541 39490 43080 47388 59235 64620 71082 78980 94776 118470 129240 142164 157960 177705 236940 284328 355410 473880 710820 1421640
• Sum of all divisors σ(n): 5054400
• Sum of proper divisors (its aliquot sum) s(n): 3632760
• 1421640 is an abundant number, because the sum of its proper divisors (3632760) is greater than itself. Its abundance is 2211120

Bases of 1421640

• Binary: 101011011000101001000₂
• Hexadecimal: 0x15B148
• Base-36: UGY0

Squares and roots of 1421640

• 1421640 squared (1421640²) is 2021060289600
• 1421640 cubed (1421640³) is 2873220150106944000
• The square root of 1421640 is 1192.3254589247
• The cube root of 1421640 is 112.4423408235

Scales and comparisons

• 1,421,640 seconds is equal to 2 weeks, 2 days, 10 hours, 54 minutes.
• To count from 1 to 1,421,640 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 1421640 cubic inches would be around 9.4 feet tall.

Recreational maths with 1421640

• 1421640 backwards is 0461241
• 1421640 is a Harshad number.
• The number of decimal digits it has is: 7
• The sum of 1421640's digits is 18
• More coming soon!