21414645

Names of 21414645

• Cardinal: 21414645 can be written as Twenty-one million, four hundred fourteen thousand, six hundred forty-five.

Scientific notation

• Scientific notation: 2.1414645 × 10⁷

Factors of 21414645

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 106

Divisors of 21414645

• Number of divisors d(n): 128
• Complete list of divisors:
  1 3 5 7 9 15 17 21 27 31 35 43 45 51 63 85 93 105 119 129 135 153 155 189 215 217 255 279 301 315 357 387 459 465 527 595 645 651 731 765 837 903 945 1071 1085 1161 1333 1395 1505 1581 1785 1935 1953 2193 2295 2635 2709 3213 3255 3655 3689 3999 4185 4515 4743 5117 5355 5805 5859 6579 6665 7905 8127 9331 9765 10965 11067 11997 13545 14229 15351 16065 18445 19737 19995 22661 23715 25585 27993 29295 32895 33201 35991 40635 46053 46655 55335 59985 67983 71145 76755 83979 98685 99603 113305 138159 139965 158627 166005 179955 203949 230265 251937 339915 419895 475881 498015 611847 690795 793135 1019745 1259685 1427643 2379405 3059235 4282929 7138215 21414645
• Sum of all divisors σ(n): 48660480
• Sum of proper divisors (its aliquot sum) s(n): 27245835
• 21414645 is an abundant number, because the sum of its proper divisors (27245835) is greater than itself. Its abundance is 5831190

Bases of 21414645

• Binary: 1010001101100001011110101₂
• Hexadecimal: 0x146C2F5
• Base-36: CQZN9

Squares and roots of 21414645

• 21414645 squared (21414645²) is 458587020476025
• 21414645 cubed (21414645³) is 9820478245101806386125
• The square root of 21414645 is 4627.5960281769
• The cube root of 21414645 is 277.6964277633

Scales and comparisons

• 21,414,645 seconds is equal to 35 weeks, 2 days, 20 hours, 30 minutes, 45 seconds.
• To count from 1 to 21,414,645 would take you about eighteen 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 21414645 cubic inches would be around 23.1 feet tall.

Recreational maths with 21414645

• 21414645 backwards is 54641412
• 21414645 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 21414645's digits is 27
• More coming soon!