138129788472

Names of 138129788472

• Cardinal: 138129788472 can be written as One hundred thirty-eight billion, one hundred twenty-nine million, seven hundred eighty-eight thousand, four hundred seventy-two.

Scientific notation

• Scientific notation: 1.38129788472 × 10¹¹

Factors of 138129788472

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 468

Divisors of 138129788472

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 3 4 6 8 12 13 24 26 39 52 53 78 104 106 156 159 212 312 318 397 424 636 689 794 1191 1272 1378 1588 2067 2382 2756 2809 3176 4134 4764 5161 5512 5618 8268 8427 9528 10322 11236 15483 16536 16854 20644 21041 22472 30966 33708 36517 41288 42082 61932 63123 67416 73034 84164 109551 123864 126246 146068 157609 168328 219102 252492 273533 292136 315218 438204 472827 504984 547066 630436 820599 876408 945654 1094132 1115173 1260872 1641198 1891308 2048917 2188264 2230346 3282396 3345519 3782616 4097834 4460692 6146751 6564792 6691038 8195668 8353277 8921384 12293502 13382076 14497249 16391336 16706554 24587004 25059831 26764152 28994498 33413108 43491747 49174008 50119662 57988996 66826216 86983494 100239324 108592601 115977992 173966988 200478648 217185202 325777803 347933976 434370404 442723681 651555606 868740808 885447362 1303111212 1328171043 1770894724 2606222424 2656342086 3541789448 5312684172 5755407853 10625368344 11510815706 17266223559 23021631412 34532447118 46043262824 69064894236 138129788472
• Sum of all divisors σ(n): 379994194440
• Sum of proper divisors (its aliquot sum) s(n): 241864405968
• 138129788472 is an abundant number, because the sum of its proper divisors (241864405968) is greater than itself. Its abundance is 103734617496

Bases of 138129788472

• Binary: 10000000101001001011010100111000111000₂
• Hexadecimal: 0x20292D4E38
• Base-36: 1RGEWQWO

Squares and roots of 138129788472

• 138129788472 squared (138129788472²) is 19079838463319464094784
• 138129788472 cubed (138129788472³) is 2635494051018247106372912878530048
• The square root of 138129788472 is 371658.1607768085
• The cube root of 138129788472 is 5169.2687961947

Scales and comparisons

• 138,129,788,472 seconds is equal to 4,392 years, 5 weeks, 1 day, 9 hours, 41 minutes, 12 seconds.
• To count from 1 to 138,129,788,472 would take you about eight thousand, seven hundred eighty-four 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 138129788472 cubic inches would be around 430.8 feet tall.

Recreational maths with 138129788472

• 138129788472 backwards is 274887921831
• The number of decimal digits it has is: 12
• The sum of 138129788472's digits is 60
• More coming soon!