21050442

Names of 21050442

• Cardinal: 21050442 can be written as Twenty-one million, fifty thousand, four hundred forty-two.

Scientific notation

• Scientific notation: 2.1050442 × 10⁷

Factors of 21050442

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 1008

Divisors of 21050442

• Number of divisors d(n): 80
• Complete list of divisors:
  1 2 3 6 7 9 14 18 19 21 27 38 42 54 57 63 81 114 126 133 162 171 189 266 342 378 399 513 567 798 977 1026 1134 1197 1539 1954 2394 2931 3078 3591 5862 6839 7182 8793 10773 13678 17586 18563 20517 21546 26379 37126 41034 52758 55689 61551 79137 111378 123102 129941 158274 167067 184653 259882 334134 369306 389823 501201 553959 779646 1002402 1107918 1169469 1503603 2338938 3007206 3508407 7016814 10525221 21050442
• Sum of all divisors σ(n): 56802240
• Sum of proper divisors (its aliquot sum) s(n): 35751798
• 21050442 is an abundant number, because the sum of its proper divisors (35751798) is greater than itself. Its abundance is 14701356

Bases of 21050442

• Binary: 1010000010011010001001010₂
• Hexadecimal: 0x141344A
• Base-36: CJ6MI

Squares and roots of 21050442

• 21050442 squared (21050442²) is 443121108395364
• 21050442 cubed (21050442³) is 9327895191252322950888
• The square root of 21050442 is 4588.0760673729
• The cube root of 21050442 is 276.1131388705

Scales and comparisons

• 21,050,442 seconds is equal to 34 weeks, 5 days, 15 hours, 20 minutes, 42 seconds.
• To count from 1 to 21,050,442 would take you about eleven hours!

  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 21050442 cubic inches would be around 23 feet tall.

Recreational maths with 21050442

• 21050442 backwards is 24405012
• 21050442 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 21050442's digits is 18
• More coming soon!