138016902780

Names of 138016902780

• Cardinal: 138016902780 can be written as One hundred thirty-eight billion, sixteen million, nine hundred two thousand, seven hundred eighty.

Scientific notation

• Scientific notation: 1.3801690278 × 10¹¹

Factors of 138016902780

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 5011534

Divisors of 138016902780

• Number of divisors d(n): 120
• Complete list of divisors:
  1 2 3 4 5 6 9 10 12 15 17 18 20 27 30 34 36 45 51 54 60 68 81 85 90 102 108 135 153 162 170 180 204 255 270 306 324 340 405 459 510 540 612 765 810 918 1020 1377 1530 1620 1836 2295 2754 3060 4590 5508 6885 9180 13770 27540 5011507 10023014 15034521 20046028 25057535 30069042 45103563 50115070 60138084 75172605 85195619 90207126 100230140 135310689 150345210 170391238 180414252 225517815 255586857 270621378 300690420 340782476 405932067 425978095 451035630 511173714 541242756 676553445 766760571 811864134 851956190 902071260 1022347428 1277934285 1353106890 1533521142 1623728268 1703912380 2029660335 2300281713 2555868570 2706213780 3067042284 3833802855 4059320670 4600563426 5111737140 6900845139 7667605710 8118641340 9201126852 11501408565 13801690278 15335211420 23002817130 27603380556 34504225695 46005634260 69008451390 138016902780
• Sum of all divisors σ(n): 458432705808
• Sum of proper divisors (its aliquot sum) s(n): 320415803028
• 138016902780 is an abundant number, because the sum of its proper divisors (320415803028) is greater than itself. Its abundance is 182398900248

Bases of 138016902780

• Binary: 10000000100010011100101100111001111100₂
• Hexadecimal: 0x202272CE7C
• Base-36: 1REJP7R0

Squares and roots of 138016902780

• 138016902780 squared (138016902780²) is 19048665452983971728400
• 138016902780 cubed (138016902780³) is 2629037807913233486936851364952000
• The square root of 138016902780 is 371506.2621006543
• The cube root of 138016902780 is 5167.8602283841

Scales and comparisons

• 138,016,902,780 seconds is equal to 4,388 years, 26 weeks, 3 days, 20 hours, 33 minutes.
• To count from 1 to 138,016,902,780 would take you about eight thousand, seven hundred seventy-seven 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 138016902780 cubic inches would be around 430.7 feet tall.

Recreational maths with 138016902780

• 138016902780 backwards is 087209610831
• 138016902780 is a Harshad number.
• The number of decimal digits it has is: 12
• The sum of 138016902780's digits is 45
• More coming soon!