138254399745

Names of 138254399745

• Cardinal: 138254399745 can be written as One hundred thirty-eight billion, two hundred fifty-four million, three hundred ninety-nine thousand, seven hundred forty-five.

Scientific notation

• Scientific notation: 1.38254399745 × 10¹¹

Factors of 138254399745

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 1745

Divisors of 138254399745

• Number of divisors d(n): 192
• Complete list of divisors:
  1 3 5 7 11 15 19 21 33 35 55 57 77 95 105 121 133 165 209 231 285 363 385 399 463 605 627 665 847 1045 1155 1237 1389 1463 1815 1995 2299 2315 2541 3135 3241 3711 4235 4389 5093 6185 6897 6945 7315 8659 8797 9723 11495 12705 13607 15279 16093 16205 18555 21945 23503 25465 25977 26391 34485 35651 40821 43295 43985 48279 48615 56023 61579 68035 70509 76395 80465 95249 96767 106953 117515 129885 131955 149677 164521 168069 178255 184737 204105 241395 258533 280115 285747 290301 307895 352545 392161 449031 476245 483835 493563 534765 572731 677369 748385 775599 822605 840345 923685 1047739 1064437 1176483 1292665 1428735 1451505 1718193 1809731 1960805 2032107 2245155 2467815 2843863 2863655 3143217 3193311 3386845 3877995 4009117 5238695 5322185 5429193 5882415 6300041 7451059 8531589 8590965 9048655 10160535 10881889 12027351 14219315 15716085 15966555 18900123 19907041 20045585 22353177 27145965 31500205 32645667 37255295 42657945 44100287 54409445 59721123 60136755 69300451 76173223 94500615 99535205 111765885 119700779 132300861 163228335 207901353 220501435 228519669 298605615 346502255 359102337 380866115 485103157 598503895 661504305 837905453 1039506765 1142598345 1316708569 1455309471 1795511685 2425515785 2513716359 3950125707 4189527265 6583542845 7276547355 9216959983 12568581795 19750628535 27650879949 46084799915 138254399745
• Sum of all divisors σ(n): 293373911040
• Sum of proper divisors (its aliquot sum) s(n): 155119511295
• 138254399745 is an abundant number, because the sum of its proper divisors (155119511295) is greater than itself. Its abundance is 16865111550

Bases of 138254399745

• Binary: 10000000110000100110101011100100000001₂
• Hexadecimal: 0x20309AB901
• Base-36: 1RIH3LKX

Squares and roots of 138254399745

• 138254399745 squared (138254399745²) is 19114279048850256065025
• 138254399745 cubed (138254399745³) is 2642633176457221684659577063418625
• The square root of 138254399745 is 371825.7653054721
• The cube root of 138254399745 is 5170.8227828881

Scales and comparisons

• 138,254,399,745 seconds is equal to 4,396 years, 3 weeks, 1 day, 15 hours, 55 minutes, 45 seconds.
• To count from 1 to 138,254,399,745 would take you about eight thousand, seven hundred ninety-two 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 138254399745 cubic inches would be around 430.9 feet tall.

Recreational maths with 138254399745

• 138254399745 backwards is 547993452831
• The number of decimal digits it has is: 12
• The sum of 138254399745's digits is 60
• More coming soon!