72129137976

Names of 72129137976

• Cardinal: 72129137976 can be written as Seventy-two billion, one hundred twenty-nine million, one hundred thirty-seven thousand, nine hundred seventy-six.

Scientific notation

• Scientific notation: 7.2129137976 × 10¹⁰

Factors of 72129137976

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 1721

Divisors of 72129137976

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 3 4 6 7 8 9 12 14 18 21 24 28 36 42 49 56 63 72 84 98 126 147 168 196 252 294 343 392 441 504 588 686 882 1029 1176 1372 1709 1764 2058 2744 3087 3418 3528 4116 5127 6174 6836 8232 10254 11963 12348 13672 15381 20508 23926 24696 30762 35889 41016 47852 61524 71778 83741 95704 107667 123048 143556 167482 215334 251223 287112 334964 430668 502446 586187 669928 753669 861336 1004892 1172374 1507338 1758561 2009784 2344748 2920681 3014676 3517122 4689496 5275683 5841362 6029352 7034244 8762043 10551366 11682724 14068488 17524086 20444767 21102732 23365448 26286129 35048172 40889534 42205464 52572258 61334301 70096344 81779068 105144516 122668602 143113369 163558136 184002903 210289032 245337204 286226738 368005806 429340107 490674408 572453476 736011612 858680214 1001793583 1144906952 1288020321 1472023224 1717360428 2003587166 2576040642 3005380749 3434720856 4007174332 5152081284 6010761498 8014348664 9016142247 10304162568 12021522996 18032284494 24043045992 36064568988 72129137976
• Sum of all divisors σ(n): 227946498000
• Sum of proper divisors (its aliquot sum) s(n): 155817360024
• 72129137976 is an abundant number, because the sum of its proper divisors (155817360024) is greater than itself. Its abundance is 83688222048

Bases of 72129137976

• Binary: 1000011001011001110110100110100111000₂
• Hexadecimal: 0x10CB3B4D38
• Base-36: X4VTR20

Squares and roots of 72129137976

• 72129137976 squared (72129137976²) is 5202612545160845376576
• 72129137976 cubed (72129137976³) is 375259958105575147279851982450176
• The square root of 72129137976 is 268568.6839078599
• The cube root of 72129137976 is 4162.6533625717

Scales and comparisons

• 72,129,137,976 seconds is equal to 2,293 years, 25 weeks, 23 hours, 39 minutes, 36 seconds.
• To count from 1 to 72,129,137,976 would take you about four thousand, five hundred eighty-six 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 72129137976 cubic inches would be around 346.9 feet tall.

Recreational maths with 72129137976

• 72129137976 backwards is 67973192127
• The number of decimal digits it has is: 11
• The sum of 72129137976's digits is 54
• More coming soon!