30231138

Names of 30231138

• Cardinal: 30231138 can be written as Thirty million, two hundred thirty-one thousand, one hundred thirty-eight.

Scientific notation

• Scientific notation: 3.0231138 × 10⁷

Factors of 30231138

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 150

Divisors of 30231138

• Number of divisors d(n): 72
• Complete list of divisors:
  1 2 3 6 7 14 21 31 42 49 62 93 98 107 147 186 214 217 294 321 434 642 651 749 961 1302 1498 1519 1922 2247 2883 3038 3317 4494 4557 5243 5766 6634 6727 9114 9951 10486 13454 15729 19902 20181 23219 31458 40362 46438 47089 69657 94178 102827 139314 141267 162533 205654 282534 308481 325066 487599 616962 719789 975198 1439578 2159367 4318734 5038523 10077046 15115569 30231138
• Sum of all divisors σ(n): 73354896
• Sum of proper divisors (its aliquot sum) s(n): 43123758
• 30231138 is an abundant number, because the sum of its proper divisors (43123758) is greater than itself. Its abundance is 12892620

Bases of 30231138

• Binary: 1110011010100101001100010₂
• Hexadecimal: 0x1CD4A62
• Base-36: HZYHU

Squares and roots of 30231138

• 30231138 squared (30231138²) is 913921704775044
• 30231138 cubed (30231138³) is 27628893178249614120072
• The square root of 30231138 is 5498.2850053449
• The cube root of 30231138 is 311.5192093527

Scales and comparisons

• 30,231,138 seconds is equal to 49 weeks, 6 days, 21 hours, 32 minutes, 18 seconds.
• To count from 1 to 30,231,138 would take you about twenty-two weeks!

  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 30231138 cubic inches would be around 26 feet tall.

Recreational maths with 30231138

• 30231138 backwards is 83113203
• 30231138 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 30231138's digits is 21
• More coming soon!