138401856

Names of 138401856

• Cardinal: 138401856 can be written as One hundred thirty-eight million, four hundred one thousand, eight hundred fifty-six.

Scientific notation

• Scientific notation: 1.38401856 × 10⁸

Factors of 138401856

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 396

Divisors of 138401856

• Number of divisors d(n): 168
• Complete list of divisors:
  1 2 3 4 6 8 9 12 16 18 23 24 31 32 36 46 48 62 64 69 72 92 93 96 124 138 144 184 186 192 207 248 276 279 288 337 368 372 414 496 552 558 576 674 713 736 744 828 992 1011 1104 1116 1348 1426 1472 1488 1656 1984 2022 2139 2208 2232 2696 2852 2976 3033 3312 4044 4278 4416 4464 5392 5704 5952 6066 6417 6624 7751 8088 8556 8928 10447 10784 11408 12132 12834 13248 15502 16176 17112 17856 20894 21568 22816 23253 24264 25668 31004 31341 32352 34224 41788 45632 46506 48528 51336 62008 62682 64704 68448 69759 83576 93012 94023 97056 102672 124016 125364 136896 139518 167152 186024 188046 194112 205344 240281 248032 250728 279036 334304 372048 376092 410688 480562 496064 501456 558072 668608 720843 744096 752184 961124 1002912 1116144 1441686 1488192 1504368 1922248 2005824 2162529 2232288 2883372 3008736 3844496 4325058 4464576 5766744 6017472 7688992 8650116 11533488 15377984 17300232 23066976 34600464 46133952 69200928 138401856
• Sum of all divisors σ(n): 428573184
• Sum of proper divisors (its aliquot sum) s(n): 290171328
• 138401856 is an abundant number, because the sum of its proper divisors (290171328) is greater than itself. Its abundance is 151769472

Bases of 138401856

• Binary: 1000001111111101100001000000₂
• Hexadecimal: 0x83FD840
• Base-36: 2AEFK0

Squares and roots of 138401856

• 138401856 squared (138401856²) is 19155073744244736
• 138401856 cubed (138401856³) is 2651097758020340780630016
• The square root of 138401856 is 11764.4318179843
• The cube root of 138401856 is 517.2660456173

Scales and comparisons

• 138,401,856 seconds is equal to 4 years, 20 weeks, 5 days, 20 hours, 57 minutes, 36 seconds.
• To count from 1 to 138,401,856 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 138401856 cubic inches would be around 43.1 feet tall.

Recreational maths with 138401856

• 138401856 backwards is 658104831
• 138401856 is a Harshad number.
• The number of decimal digits it has is: 9
• The sum of 138401856's digits is 36
• More coming soon!