21349139706

Names of 21349139706

• Cardinal: 21349139706 can be written as Twenty-one billion, three hundred forty-nine million, one hundred thirty-nine thousand, seven hundred six.

Scientific notation

• Scientific notation: 2.1349139706 × 10¹⁰

Factors of 21349139706

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 1729

Divisors of 21349139706

• Number of divisors d(n): 108
• Complete list of divisors:
  1 2 3 6 9 18 27 31 54 62 81 93 162 186 243 279 486 558 729 837 961 1458 1674 1693 1922 2187 2511 2883 3386 4374 5022 5079 5766 6561 7533 8649 10158 13122 15066 15237 17298 22599 25947 30474 45198 45711 51894 52483 67797 77841 91422 104966 135594 137133 155682 157449 203391 233523 274266 314898 406782 411399 467046 472347 700569 822798 944694 1234197 1401138 1417041 1626973 2101707 2468394 2834082 3253946 3702591 4203414 4251123 4880919 6305121 7405182 8502246 9761838 11107773 12610242 12753369 14642757 22215546 25506738 29285514 38260107 43928271 76520214 87856542 114780321 131784813 229560642 263569626 344340963 395354439 688681926 790708878 1186063317 2372126634 3558189951 7116379902 10674569853 21349139706
• Sum of all divisors σ(n): 49661878266
• Sum of proper divisors (its aliquot sum) s(n): 28312738560
• 21349139706 is an abundant number, because the sum of its proper divisors (28312738560) is greater than itself. Its abundance is 6963598854

Bases of 21349139706

• Binary: 10011111000100000100000010011111010₂
• Hexadecimal: 0x4F88204FA
• Base-36: 9T2Q5MI

Squares and roots of 21349139706

• 21349139706 squared (21349139706²) is 455785766186305766436
• 21349139706 cubed (21349139706³) is 9730633998317692631675569707816
• The square root of 21349139706 is 146113.4480669045
• The cube root of 21349139706 is 2774.1298987203

Scales and comparisons

• 21,349,139,706 seconds is equal to 678 years, 43 weeks, 3 days, 12 hours, 35 minutes, 6 seconds.
• To count from 1 to 21,349,139,706 would take you about one thousand, three hundred fifty-seven 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 21349139706 cubic inches would be around 231.2 feet tall.

Recreational maths with 21349139706

• 21349139706 backwards is 60793194312
• The number of decimal digits it has is: 11
• The sum of 21349139706's digits is 45
• More coming soon!