138221694

Names of 138221694

• Cardinal: 138221694 can be written as One hundred thirty-eight million, two hundred twenty-one thousand, six hundred ninety-four.

Scientific notation

• Scientific notation: 1.38221694 × 10⁸

Factors of 138221694

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 321

Divisors of 138221694

• Number of divisors d(n): 128
• Complete list of divisors:
  1 2 3 6 9 13 18 19 26 27 38 39 43 54 57 78 86 114 117 129 171 234 241 247 258 342 351 387 482 494 513 559 702 723 741 774 817 1026 1118 1161 1446 1482 1634 1677 2169 2223 2322 2451 3133 3354 4338 4446 4579 4902 5031 6266 6507 6669 7353 9158 9399 10062 10363 10621 13014 13338 13737 14706 15093 18798 20726 21242 22059 27474 28197 30186 31089 31863 41211 44118 56394 59527 62178 63726 82422 84591 93267 95589 119054 123633 134719 169182 178581 186534 191178 196897 247266 269438 279801 286767 357162 393794 404157 535743 559602 573534 590691 808314 1071486 1181382 1212471 1607229 1772073 2424942 2559661 3214458 3544146 3637413 5119322 5316219 7274826 7678983 10632438 15357966 23036949 46073898 69110847 138221694
• Sum of all divisors σ(n): 357772800
• Sum of proper divisors (its aliquot sum) s(n): 219551106
• 138221694 is an abundant number, because the sum of its proper divisors (219551106) is greater than itself. Its abundance is 81329412

Bases of 138221694

• Binary: 1000001111010001100001111110₂
• Hexadecimal: 0x83D187E
• Base-36: 2AAKJI

Squares and roots of 138221694

• 138221694 squared (138221694²) is 19105236692229636
• 138221694 cubed (138221694³) is 2640758179870936924923384
• The square root of 138221694 is 11756.7722611267
• The cube root of 138221694 is 517.0415010577

Scales and comparisons

• 138,221,694 seconds is equal to 4 years, 20 weeks, 3 days, 18 hours, 54 minutes, 54 seconds.
• To count from 1 to 138,221,694 would take you about 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 138221694 cubic inches would be around 43.1 feet tall.

Recreational maths with 138221694

• 138221694 backwards is 496122831
• The number of decimal digits it has is: 9
• The sum of 138221694's digits is 36
• More coming soon!