21256950

Names of 21256950

• Cardinal: 21256950 can be written as Twenty-one million, two hundred fifty-six thousand, nine hundred fifty.

Scientific notation

• Scientific notation: 2.125695 × 10⁷

Factors of 21256950

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 1025

Divisors of 21256950

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 3 5 6 10 11 13 15 22 25 26 30 33 39 50 55 65 66 75 78 110 130 143 150 165 195 275 286 325 330 390 429 550 650 715 825 858 975 991 1430 1650 1950 1982 2145 2973 3575 4290 4955 5946 7150 9910 10725 10901 12883 14865 21450 21802 24775 25766 29730 32703 38649 49550 54505 64415 65406 74325 77298 109010 128830 141713 148650 163515 193245 272525 283426 322075 327030 386490 425139 545050 644150 708565 817575 850278 966225 1417130 1635150 1932450 2125695 3542825 4251390 7085650 10628475 21256950
• Sum of all divisors σ(n): 61996032
• Sum of proper divisors (its aliquot sum) s(n): 40739082
• 21256950 is an abundant number, because the sum of its proper divisors (40739082) is greater than itself. Its abundance is 19482132

Bases of 21256950

• Binary: 1010001000101101011110110₂
• Hexadecimal: 0x1445AF6
• Base-36: CNLYU

Squares and roots of 21256950

• 21256950 squared (21256950²) is 451857923302500
• 21256950 cubed (21256950³) is 9605121282745077375000
• The square root of 21256950 is 4610.5260003605
• The cube root of 21256950 is 277.0131061147

Scales and comparisons

• 21,256,950 seconds is equal to 35 weeks, 1 day, 42 minutes, 30 seconds.
• To count from 1 to 21,256,950 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 21256950 cubic inches would be around 23.1 feet tall.

Recreational maths with 21256950

• 21256950 backwards is 05965212
• 21256950 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 21256950's digits is 30
• More coming soon!