138390392525

Names of 138390392525

• Cardinal: 138390392525 can be written as One hundred thirty-eight billion, three hundred ninety million, three hundred ninety-two thousand, five hundred twenty-five.

Scientific notation

• Scientific notation: 1.38390392525 × 10¹¹

Factors of 138390392525

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 2128

Divisors of 138390392525

• Number of divisors d(n): 144
• Complete list of divisors:
  1 5 7 11 17 25 35 49 55 77 85 119 175 187 245 275 347 385 425 539 595 833 935 1225 1309 1735 1741 1925 2429 2695 2975 3817 4165 4675 5899 6545 8675 8705 9163 12145 12187 13475 17003 19085 19151 20825 26719 29495 29597 32725 41293 43525 45815 60725 60935 64889 85015 85309 95425 95755 133595 134057 147475 147985 187033 206465 207179 229075 289051 304675 324445 325567 425075 426545 454223 478775 604127 667975 670285 739925 935165 938399 1032325 1035895 1445255 1450253 1622225 1627835 2132725 2271115 2278969 3020635 3179561 3351425 4228889 4675825 4691995 5179475 6645397 7226275 7251265 8139175 10270159 11355575 11394845 15103175 15897805 15952783 21144445 23459975 29602223 33226985 36256325 46517779 51350795 56974225 71891113 79489025 79763915 105722225 112971749 148011115 166134925 232588895 256753975 325624453 359455565 398819575 503237791 564858745 740055575 790802243 1162944475 1628122265 1797277825 2516188955 2824293725 3954011215 5535615701 8140611325 12580944775 19770056075 27678078505 138390392525
• Sum of all divisors σ(n): 231375673152
• Sum of proper divisors (its aliquot sum) s(n): 92985280627
• 138390392525 is a deficient number, because the sum of its proper divisors (92985280627) is less than itself. Its deficiency is 45405111898

Bases of 138390392525

• Binary: 10000000111000101101011100111011001101₂
• Hexadecimal: 0x2038B5CECD
• Base-36: 1RKQ2EA5

Squares and roots of 138390392525

• 138390392525 squared (138390392525²) is 19151900743223575875625
• 138390392525 cubed (138390392525³) is 2650439061454549899261864329703125
• The square root of 138390392525 is 372008.5920042707
• The cube root of 138390392525 is 5172.5176394435

Scales and comparisons

• 138,390,392,525 seconds is equal to 4,400 years, 20 weeks, 15 hours, 42 minutes, 5 seconds.
• To count from 1 to 138,390,392,525 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 138390392525 cubic inches would be around 431 feet tall.

Recreational maths with 138390392525

• 138390392525 backwards is 525293093831
• The number of decimal digits it has is: 12
• The sum of 138390392525's digits is 50
• More coming soon!