138388730688

Names of 138388730688

• Cardinal: 138388730688 can be written as One hundred thirty-eight billion, three hundred eighty-eight million, seven hundred thirty thousand, six hundred eighty-eight.

Scientific notation

• Scientific notation: 1.38388730688 × 10¹¹

Factors of 138388730688

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 1451

Divisors of 138388730688

• Number of divisors d(n): 210
• Complete list of divisors:
  1 2 3 4 6 8 9 12 13 16 18 24 26 27 32 36 39 48 52 54 64 72 78 81 96 104 108 117 144 156 162 192 208 216 234 288 312 324 351 416 432 468 576 624 648 702 832 864 936 1053 1248 1296 1404 1433 1728 1872 2106 2496 2592 2808 2866 3744 4212 4299 5184 5616 5732 7488 8424 8598 11232 11464 12897 16848 17196 18629 22464 22928 25794 33696 34392 37258 38691 45856 51588 55887 67392 68784 74516 77382 91712 103176 111774 116073 137568 149032 154764 167661 206352 223548 232146 275136 298064 309528 335322 412704 447096 464292 502983 596128 619056 670644 825408 894192 928584 1005966 1192256 1238112 1341288 1508949 1788384 1857168 2011932 2053489 2476224 2682576 3017898 3576768 3714336 4023864 4106978 5365152 6035796 6160467 7428672 8047728 8213956 10730304 12071592 12320934 16095456 16427912 18481401 24143184 24641868 26695357 32190912 32855824 36962802 48286368 49283736 53390714 55444203 65711648 73925604 80086071 96572736 98567472 106781428 110888406 131423296 147851208 160172142 166332609 197134944 213562856 221776812 240258213 295702416 320344284 332665218 394269888 427125712 443553624 480516426 591404832 640688568 665330436 720774639 854251424 887107248 961032852 1182809664 1281377136 1330660872 1441549278 1708502848 1774214496 1922065704 2162323917 2562754272 2661321744 2883098556 3548428992 3844131408 4324647834 5125508544 5322643488 5766197112 7688262816 8649295668 10645286976 11532394224 15376525632 17298591336 23064788448 34597182672 46129576896 69194365344 138388730688
• Sum of all divisors σ(n): 442092024374
• Sum of proper divisors (its aliquot sum) s(n): 303703293686
• 138388730688 is an abundant number, because the sum of its proper divisors (303703293686) is greater than itself. Its abundance is 165314562998

Bases of 138388730688

• Binary: 10000000111000100111000111001101000000₂
• Hexadecimal: 0x20389C7340
• Base-36: 1RKP2S00

Squares and roots of 138388730688

• 138388730688 squared (138388730688²) is 19151440781435792953344
• 138388730688 cubed (138388730688³) is 2650343580589298220984050965020672
• The square root of 138388730688 is 372006.3583972725
• The cube root of 138388730688 is 5172.4969349341

Scales and comparisons

• 138,388,730,688 seconds is equal to 4,400 years, 17 weeks, 2 days, 10 hours, 4 minutes, 48 seconds.
• To count from 1 to 138,388,730,688 would take you about eight thousand, eight hundred 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 138388730688 cubic inches would be around 431 feet tall.

Recreational maths with 138388730688

• 138388730688 backwards is 886037883831
• The number of decimal digits it has is: 12
• The sum of 138388730688's digits is 63
• More coming soon!