138729981572

Names of 138729981572

• Cardinal: 138729981572 can be written as One hundred thirty-eight billion, seven hundred twenty-nine million, nine hundred eighty-one thousand, five hundred seventy-two.

Scientific notation

• Scientific notation: 1.38729981572 × 10¹¹

Factors of 138729981572

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 7523

Divisors of 138729981572

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 4 7 13 14 26 28 29 52 58 91 116 182 203 364 377 406 754 812 1508 2639 2833 4639 5278 5666 9278 10556 11332 18556 19831 32473 36829 39662 60307 64946 73658 79324 82157 120614 129892 134531 147316 164314 241228 257803 269062 328628 422149 515606 538124 575099 844298 941717 1031212 1068041 1150198 1688596 1748903 1883434 2136082 2300396 3497806 3766868 4272164 6995612 7476287 12242321 13142287 14952574 24484642 26284574 29905148 48969284 52569148 91996009 170849731 183992018 341699462 367984036 381126323 683398924 762252646 1195948117 1524505292 2391896234 2667884261 4783792468 4954642199 5335768522 9909284398 10671537044 19818568796 34682495393 69364990786 138729981572
• Sum of all divisors σ(n): 309282355200
• Sum of proper divisors (its aliquot sum) s(n): 170552373628
• 138729981572 is an abundant number, because the sum of its proper divisors (170552373628) is greater than itself. Its abundance is 31822392056

Bases of 138729981572

• Binary: 10000001001100111100111000011010000100₂
• Hexadecimal: 0x204CF38684
• Base-36: 1RQC8YV8

Squares and roots of 138729981572

• 138729981572 squared (138729981572²) is 19246007786967459591184
• 138729981572 cubed (138729981572³) is 2669998305620564170848610973661248
• The square root of 138729981572 is 372464.7386961615
• The cube root of 138729981572 is 5176.7450416167

Scales and comparisons

• 138,729,981,572 seconds is equal to 4,411 years, 9 weeks, 4 days, 1 hour, 59 minutes, 32 seconds.
• To count from 1 to 138,729,981,572 would take you about eight thousand, eight hundred twenty-two 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 138729981572 cubic inches would be around 431.4 feet tall.

Recreational maths with 138729981572

• 138729981572 backwards is 275189927831
• The number of decimal digits it has is: 12
• The sum of 138729981572's digits is 62
• More coming soon!