138905457444

Names of 138905457444

• Cardinal: 138905457444 can be written as One hundred thirty-eight billion, nine hundred five million, four hundred fifty-seven thousand, four hundred forty-four.

Scientific notation

• Scientific notation: 1.38905457444 × 10¹¹

Factors of 138905457444

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 1639

Divisors of 138905457444

• Number of divisors d(n): 192
• Complete list of divisors:
  1 2 3 4 6 9 12 13 18 26 27 36 39 52 54 78 108 117 156 223 234 351 446 468 487 669 702 892 911 974 1338 1404 1461 1822 1948 2007 2676 2733 2899 2922 3644 4014 4383 5466 5798 5844 6021 6331 8028 8199 8697 8766 10932 11596 11843 12042 12662 13149 16398 17394 17532 18993 23686 24084 24597 25324 26091 26298 32796 34788 35529 37986 47372 49194 52182 52596 56979 71058 75972 78273 98388 104364 106587 108601 113958 142116 156546 170937 203153 213174 217202 227916 313092 319761 325803 341874 406306 426348 434404 443657 609459 639522 651606 683748 812612 887314 977409 1218918 1279044 1303212 1330971 1411813 1774628 1828377 1954818 2437836 2640989 2661942 2823626 2932227 3656754 3909636 3992913 4235439 5281978 5323884 5485131 5647252 5767541 5864454 7313508 7922967 7985826 8470878 10563956 10970262 11535082 11728908 11978739 12706317 15845934 15971652 16941756 17302623 21940524 23070164 23768901 23957478 25412634 31691868 34605246 38118951 47537802 47914956 50825268 51907869 69210492 71306703 76237902 95075604 98935511 103815738 142613406 152475804 155723607 197871022 207631476 285226812 296806533 311447214 395742044 593613066 622894428 890419599 1187226132 1286161643 1780839198 2572323286 2671258797 3561678396 3858484929 5144646572 5342517594 7716969858 10685035188 11575454787 15433939716 23150909574 34726364361 46301819148 69452728722 138905457444
• Sum of all divisors σ(n): 390794772480
• Sum of proper divisors (its aliquot sum) s(n): 251889315036
• 138905457444 is an abundant number, because the sum of its proper divisors (251889315036) is greater than itself. Its abundance is 112983857592

Bases of 138905457444

• Binary: 10000001010111011010010001001100100100₂
• Hexadecimal: 0x2057691324
• Base-36: 1RT8Q0X0

Squares and roots of 138905457444

• 138905457444 squared (138905457444²) is 19294726107726895013136
• 138905457444 cubed (138905457444³) is 2680142756250493974821418468984384
• The square root of 138905457444 is 372700.2246363691
• The cube root of 138905457444 is 5178.9267644803

Scales and comparisons

• 138,905,457,444 seconds is equal to 4,416 years, 39 weeks, 5 days, 1 hour, 17 minutes, 24 seconds.
• To count from 1 to 138,905,457,444 would take you about eight thousand, eight hundred thirty-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 138905457444 cubic inches would be around 431.6 feet tall.

Recreational maths with 138905457444

• 138905457444 backwards is 444754509831
• 138905457444 is a Harshad number.
• The number of decimal digits it has is: 12
• The sum of 138905457444's digits is 54
• More coming soon!