21262140

Names of 21262140

• Cardinal: 21262140 can be written as Twenty-one million, two hundred sixty-two thousand, one hundred forty.

Scientific notation

• Scientific notation: 2.126214 × 10⁷

Factors of 21262140

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 6246

Divisors of 21262140

• Number of divisors d(n): 72
• Complete list of divisors:
  1 2 3 4 5 6 9 10 12 15 18 19 20 30 36 38 45 57 60 76 90 95 114 171 180 190 228 285 342 380 570 684 855 1140 1710 3420 6217 12434 18651 24868 31085 37302 55953 62170 74604 93255 111906 118123 124340 186510 223812 236246 279765 354369 373020 472492 559530 590615 708738 1063107 1119060 1181230 1417476 1771845 2126214 2362460 3543690 4252428 5315535 7087380 10631070 21262140
• Sum of all divisors σ(n): 67900560
• Sum of proper divisors (its aliquot sum) s(n): 46638420
• 21262140 is an abundant number, because the sum of its proper divisors (46638420) is greater than itself. Its abundance is 25376280

Bases of 21262140

• Binary: 1010001000110111100111100₂
• Hexadecimal: 0x1446F3C
• Base-36: CNPZ0

Squares and roots of 21262140

• 21262140 squared (21262140²) is 452078597379600
• 21262140 cubed (21262140³) is 9612158428488688344000
• The square root of 21262140 is 4611.0888085137
• The cube root of 21262140 is 277.0356490327

Scales and comparisons

• 21,262,140 seconds is equal to 35 weeks, 1 day, 2 hours, 9 minutes.
• To count from 1 to 21,262,140 would take you about five days!

  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 21262140 cubic inches would be around 23.1 feet tall.

Recreational maths with 21262140

• 21262140 backwards is 04126212
• 21262140 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 21262140's digits is 18
• More coming soon!