21121464

Names of 21121464

• Cardinal: 21121464 can be written as Twenty-one million, one hundred twenty-one thousand, four hundred sixty-four.

Scientific notation

• Scientific notation: 2.1121464 × 10⁷

Factors of 21121464

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 553

Divisors of 21121464

• Number of divisors d(n): 128
• Complete list of divisors:
  1 2 3 4 6 7 8 12 13 14 19 21 24 26 28 38 39 42 52 56 57 76 78 84 91 104 114 133 152 156 168 182 228 247 266 273 312 364 399 456 494 509 532 546 728 741 798 988 1018 1064 1092 1482 1527 1596 1729 1976 2036 2184 2964 3054 3192 3458 3563 4072 5187 5928 6108 6617 6916 7126 9671 10374 10689 12216 13234 13832 14252 19342 19851 20748 21378 26468 28504 29013 38684 39702 41496 42756 46319 52936 58026 67697 77368 79404 85512 92638 116052 125723 135394 138957 158808 185276 203091 232104 251446 270788 277914 370552 377169 406182 502892 541576 555828 754338 812364 880061 1005784 1111656 1508676 1624728 1760122 2640183 3017352 3520244 5280366 7040488 10560732 21121464
• Sum of all divisors σ(n): 68544000
• Sum of proper divisors (its aliquot sum) s(n): 47422536
• 21121464 is an abundant number, because the sum of its proper divisors (47422536) is greater than itself. Its abundance is 26301072

Bases of 21121464

• Binary: 1010000100100100110111000₂
• Hexadecimal: 0x14249B8
• Base-36: CKPFC

Squares and roots of 21121464

• 21121464 squared (21121464²) is 446116241503296
• 21121464 cubed (21121464³) is 9422628134727172345344
• The square root of 21121464 is 4595.8093955255
• The cube root of 21121464 is 276.4233159591

Scales and comparisons

• 21,121,464 seconds is equal to 34 weeks, 6 days, 11 hours, 4 minutes, 24 seconds.
• To count from 1 to 21,121,464 would take you about two 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 21121464 cubic inches would be around 23 feet tall.

Recreational maths with 21121464

• 21121464 backwards is 46412112
• 21121464 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 21121464's digits is 21
• More coming soon!