138388653240

Names of 138388653240

• Cardinal: 138388653240 can be written as One hundred thirty-eight billion, three hundred eighty-eight million, six hundred fifty-three thousand, two hundred forty.

Scientific notation

• Scientific notation: 1.3838865324 × 10¹¹

Factors of 138388653240

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 10613

Divisors of 138388653240

• Number of divisors d(n): 128
• Complete list of divisors:
  1 2 3 4 5 6 8 10 12 15 20 24 30 40 60 120 269 433 538 807 866 1076 1299 1345 1614 1732 2152 2165 2598 2690 3228 3464 4035 4330 5196 5380 6456 6495 8070 8660 9901 10392 10760 12990 16140 17320 19802 25980 29703 32280 39604 49505 51960 59406 79208 99010 116477 118812 148515 198020 232954 237624 297030 349431 396040 465908 582385 594060 698862 931816 1164770 1188120 1397724 1747155 2329540 2663369 2795448 3494310 4287133 4659080 5326738 6988620 7990107 8574266 10653476 12861399 13316845 13977240 15980214 17148532 21306952 21435665 25722798 26633690 31960428 34297064 39950535 42871330 51445596 53267380 63920856 64306995 79901070 85742660 102891192 106534760 128613990 159802140 171485320 257227980 319604280 514455960 1153238777 2306477554 3459716331 4612955108 5766193885 6919432662 9225910216 11532387770 13838865324 17298581655 23064775540 27677730648 34597163310 46129551080 69194326620 138388653240
• Sum of all divisors σ(n): 417713889600
• Sum of proper divisors (its aliquot sum) s(n): 279325236360
• 138388653240 is an abundant number, because the sum of its proper divisors (279325236360) is greater than itself. Its abundance is 140936583120

Bases of 138388653240

• Binary: 10000000111000100110110100010010111000₂
• Hexadecimal: 0x20389B44B8
• Base-36: 1RKP148O

Squares and roots of 138388653240

• 138388653240 squared (138388653240²) is 19151419345580962497600
• 138388653240 cubed (138388653240³) is 2650339130869431545425810732224000
• The square root of 138388653240 is 372006.2543022627
• The cube root of 138388653240 is 5172.4959700203

Scales and comparisons

• 138,388,653,240 seconds is equal to 4,400 years, 17 weeks, 1 day, 12 hours, 34 minutes.
• To count from 1 to 138,388,653,240 would take you about eight thousand, eight hundred 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 138388653240 cubic inches would be around 431 feet tall.

Recreational maths with 138388653240

• 138388653240 backwards is 042356883831
• The number of decimal digits it has is: 12
• The sum of 138388653240's digits is 51
• More coming soon!