72145242

Names of 72145242

• Cardinal: 72145242 can be written as Seventy-two million, one hundred forty-five thousand, two hundred forty-two.

Scientific notation

• Scientific notation: 7.2145242 × 10⁷

Factors of 72145242

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 638

Divisors of 72145242

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 3 6 9 13 18 19 26 27 38 39 54 57 78 81 114 117 162 171 234 243 247 342 351 486 494 513 601 702 741 1026 1053 1202 1482 1539 1803 2106 2223 3078 3159 3606 4446 4617 5409 6318 6669 7813 9234 10818 11419 13338 15626 16227 20007 22838 23439 32454 34257 40014 46878 48681 60021 68514 70317 97362 102771 120042 140634 146043 148447 205542 210951 292086 296894 308313 421902 445341 616626 632853 890682 924939 1265706 1336023 1849878 1898559 2672046 2774817 3797118 4008069 5549634 8016138 12024207 24048414 36072621 72145242
• Sum of all divisors σ(n): 184067520
• Sum of proper divisors (its aliquot sum) s(n): 111922278
• 72145242 is an abundant number, because the sum of its proper divisors (111922278) is greater than itself. Its abundance is 39777036

Bases of 72145242

• Binary: 100010011001101100101011010₂
• Hexadecimal: 0x44CD95A
• Base-36: 16YBMI

Squares and roots of 72145242

• 72145242 squared (72145242²) is 5204935943238564
• 72145242 cubed (72145242³) is 375511363219444463512488
• The square root of 72145242 is 8493.8355293707
• The cube root of 72145242 is 416.2963133275

Scales and comparisons

• 72,145,242 seconds is equal to 2 years, 15 weeks, 2 days, 20 minutes, 42 seconds.
• To count from 1 to 72,145,242 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 72145242 cubic inches would be around 34.7 feet tall.

Recreational maths with 72145242

• 72145242 backwards is 24254127
• 72145242 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 72145242's digits is 27
• More coming soon!