71664138

Names of 71664138

• Cardinal: 71664138 can be written as Seventy-one million, six hundred sixty-four thousand, one hundred thirty-eight.

Scientific notation

• Scientific notation: 7.1664138 × 10⁷

Factors of 71664138

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 745

Divisors of 71664138

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 3 6 7 9 13 14 18 21 26 39 42 63 67 78 91 117 126 134 182 201 234 273 402 469 546 603 653 819 871 938 1206 1306 1407 1638 1742 1959 2613 2814 3918 4221 4571 5226 5877 6097 7839 8442 8489 9142 11754 12194 13713 15678 16978 18291 25467 27426 36582 41139 43751 50934 54873 59423 76401 82278 87502 109746 118846 131253 152802 178269 262506 306257 356538 393759 534807 568763 612514 787518 918771 1069614 1137526 1706289 1837542 2756313 3412578 3981341 5118867 5512626 7962682 10237734 11944023 23888046 35832069 71664138
• Sum of all divisors σ(n): 194253696
• Sum of proper divisors (its aliquot sum) s(n): 122589558
• 71664138 is an abundant number, because the sum of its proper divisors (122589558) is greater than itself. Its abundance is 50925420

Bases of 71664138

• Binary: 100010001011000001000001010₂
• Hexadecimal: 0x445820A
• Base-36: 16O0EI

Squares and roots of 71664138

• 71664138 squared (71664138²) is 5135748675283044
• 71664138 cubed (71664138³) is 368049001798801254276072
• The square root of 71664138 is 8465.4673822537
• The cube root of 71664138 is 415.3688847635

Scales and comparisons

• 71,664,138 seconds is equal to 2 years, 14 weeks, 3 days, 10 hours, 42 minutes, 18 seconds.
• To count from 1 to 71,664,138 would take you about three years!

  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 71664138 cubic inches would be around 34.6 feet tall.

Recreational maths with 71664138

• 71664138 backwards is 83146617
• The number of decimal digits it has is: 8
• The sum of 71664138's digits is 36
• More coming soon!