21371250

Names of 21371250

• Cardinal: 21371250 can be written as Twenty-one million, three hundred seventy-one thousand, two hundred fifty.

Scientific notation

• Scientific notation: 2.137125 × 10⁷

Factors of 21371250

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 190

Divisors of 21371250

• Number of divisors d(n): 80
• Complete list of divisors:
  1 2 3 5 6 10 15 25 30 41 50 75 82 123 125 139 150 205 246 250 278 375 410 417 615 625 695 750 834 1025 1230 1250 1390 1875 2050 2085 3075 3475 3750 4170 5125 5699 6150 6950 10250 10425 11398 15375 17097 17375 20850 25625 28495 30750 34194 34750 51250 52125 56990 76875 85485 86875 104250 142475 153750 170970 173750 260625 284950 427425 521250 712375 854850 1424750 2137125 3561875 4274250 7123750 10685625 21371250
• Sum of all divisors σ(n): 55107360
• Sum of proper divisors (its aliquot sum) s(n): 33736110
• 21371250 is an abundant number, because the sum of its proper divisors (33736110) is greater than itself. Its abundance is 12364860

Bases of 21371250

• Binary: 1010001100001100101110010₂
• Hexadecimal: 0x1461972
• Base-36: CQ25U

Squares and roots of 21371250

• 21371250 squared (21371250²) is 456730326562500
• 21371250 cubed (21371250³) is 9760897991548828125000
• The square root of 21371250 is 4622.9049308849
• The cube root of 21371250 is 277.5087246667

Scales and comparisons

• 21,371,250 seconds is equal to 35 weeks, 2 days, 8 hours, 27 minutes, 30 seconds.
• To count from 1 to 21,371,250 would take you about forty-one minutes!

  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 21371250 cubic inches would be around 23.1 feet tall.

Recreational maths with 21371250

• 21371250 backwards is 05217312
• The number of decimal digits it has is: 8
• The sum of 21371250's digits is 21
• More coming soon!