138253428

Names of 138253428

• Cardinal: 138253428 can be written as One hundred thirty-eight million, two hundred fifty-three thousand, four hundred twenty-eight.

Scientific notation

• Scientific notation: 1.38253428 × 10⁸

Factors of 138253428

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 146

Divisors of 138253428

• Number of divisors d(n): 108
• Complete list of divisors:
  1 2 3 4 6 9 12 18 31 36 43 62 67 86 93 124 129 134 172 186 201 258 268 279 372 387 402 516 558 603 774 804 1116 1206 1333 1548 1849 2077 2412 2666 2881 3698 3999 4154 5332 5547 5762 6231 7396 7998 8308 8643 11094 11524 11997 12462 15996 16641 17286 18693 22188 23994 24924 25929 33282 34572 37386 47988 51858 57319 66564 74772 89311 103716 114638 123883 171957 178622 229276 247766 267933 343914 357244 371649 495532 515871 535866 687828 743298 803799 1031742 1071732 1114947 1486596 1607598 2063484 2229894 3215196 3840373 4459788 7680746 11521119 15361492 23042238 34563357 46084476 69126714 138253428
• Sum of all divisors σ(n): 374844288
• Sum of proper divisors (its aliquot sum) s(n): 236590860
• 138253428 is an abundant number, because the sum of its proper divisors (236590860) is greater than itself. Its abundance is 98337432

Bases of 138253428

• Binary: 1000001111011001010001110100₂
• Hexadecimal: 0x83D9474
• Base-36: 2AB910

Squares and roots of 138253428

• 138253428 squared (138253428²) is 19114010353751184
• 138253428 cubed (138253428³) is 2642577454233593847058752
• The square root of 138253428 is 11758.1217887893
• The cube root of 138253428 is 517.0810668185

Scales and comparisons

• 138,253,428 seconds is equal to 4 years, 20 weeks, 4 days, 3 hours, 43 minutes, 48 seconds.
• To count from 1 to 138,253,428 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 138253428 cubic inches would be around 43.1 feet tall.

Recreational maths with 138253428

• 138253428 backwards is 824352831
• 138253428 is a Harshad number.
• The number of decimal digits it has is: 9
• The sum of 138253428's digits is 36
• More coming soon!