138438928125

Names of 138438928125

• Cardinal: 138438928125 can be written as One hundred thirty-eight billion, four hundred thirty-eight million, nine hundred twenty-eight thousand, one hundred twenty-five.

Scientific notation

• Scientific notation: 1.38438928125 × 10¹¹

Factors of 138438928125

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 256

Divisors of 138438928125

• Number of divisors d(n): 288
• Complete list of divisors:
  1 3 5 9 15 19 25 31 45 57 61 75 93 95 125 137 155 171 183 225 279 285 305 375 411 465 475 549 589 625 685 775 855 915 1125 1159 1233 1395 1425 1525 1767 1875 1891 2055 2325 2375 2603 2745 2945 3125 3425 3477 3875 4247 4275 4575 5301 5625 5673 5795 6165 6975 7125 7625 7809 8357 8835 9375 9455 10275 10431 11625 11875 12741 13015 13725 14725 17019 17125 17385 19375 21235 21375 22875 23427 25071 26505 28125 28365 28975 30825 34875 35625 35929 38125 38223 39045 41785 44175 47275 51375 52155 58125 59375 63705 65075 68625 73625 75213 80693 85095 85625 86925 96875 106175 106875 107787 114375 117135 125355 132525 141825 144875 154125 158783 174375 178125 179645 190625 191115 195225 208925 220875 236375 242079 256875 259067 260775 290625 318525 323361 325375 343125 368125 376065 403465 425475 428125 434625 476349 530875 534375 538935 571875 585675 626775 662625 709125 724375 726237 770625 777201 793915 871875 898225 955575 976125 1044625 1104375 1181875 1210395 1284375 1295335 1303875 1429047 1592625 1616805 1626875 1715625 1840625 1880325 2017325 2127375 2173125 2331603 2381745 2654375 2694675 2928375 3133875 3313125 3545625 3621875 3631185 3853125 3886005 3969575 4491125 4777875 4880625 4922273 5223125 5521875 5909375 6051975 6476675 6519375 7145235 7963125 8084025 8134375 9401625 10086625 10636875 10865625 11658015 11908725 13271875 13473375 14641875 14766819 15669375 16565625 17728125 18155925 19430025 19847875 22455625 23889375 24403125 24611365 26115625 30259875 32383375 32596875 35726175 39815625 40420125 44300457 47008125 50433125 53184375 58290075 59543625 67366875 73209375 73834095 78346875 90779625 97150125 99239375 112278125 119446875 123056825 151299375 161916875 178630875 202100625 221502285 235040625 252165625 291450375 297718125 336834375 369170475 453898125 485750625 496196875 615284125 756496875 809584375 893154375 1010503125 1107511425 1457251875 1488590625 1845852375 2269490625 2428753125 3076420625 4465771875 5537557125 7286259375 9229261875 15382103125 27687785625 46146309375 138438928125
• Sum of all divisors σ(n): 278052203520
• Sum of proper divisors (its aliquot sum) s(n): 139613275395
• 138438928125 is an abundant number, because the sum of its proper divisors (139613275395) is greater than itself. Its abundance is 1174347270

Bases of 138438928125

• Binary: 10000000111011100110100110011011111101₂
• Hexadecimal: 0x203B9A66FD
• Base-36: 1RLIYOL9

Squares and roots of 138438928125

• 138438928125 squared (138438928125²) is 19165336820398916015625
• 138438928125 cubed (138438928125³) is 2653228686570621568115020751953125
• The square root of 138438928125 is 372073.8208003891
• The cube root of 138438928125 is 5173.1222621083

Scales and comparisons

• 138,438,928,125 seconds is equal to 4,401 years, 48 weeks, 2 days, 9 hours, 48 minutes, 45 seconds.
• To count from 1 to 138,438,928,125 would take you about eight thousand, eight hundred three 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 138438928125 cubic inches would be around 431.1 feet tall.

Recreational maths with 138438928125

• 138438928125 backwards is 521829834831
• The number of decimal digits it has is: 12
• The sum of 138438928125's digits is 54
• More coming soon!