138634561440

Names of 138634561440

• Cardinal: 138634561440 can be written as One hundred thirty-eight billion, six hundred thirty-four million, five hundred sixty-one thousand, four hundred forty.

Scientific notation

• Scientific notation: 1.3863456144 × 10¹¹

Factors of 138634561440

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 184

Divisors of 138634561440

• Number of divisors d(n): 288
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 30 32 36 40 45 47 48 60 72 80 90 94 96 120 127 141 144 160 180 188 235 240 254 282 288 360 376 381 423 470 480 508 564 635 705 720 752 762 846 940 1016 1128 1143 1270 1410 1440 1504 1524 1692 1880 1905 2032 2115 2256 2286 2540 2820 3048 3384 3760 3810 4064 4230 4512 4572 5080 5640 5715 5969 6096 6768 7520 7620 8460 9144 10160 11280 11430 11938 12192 13536 15240 16129 16920 17907 18288 20320 22560 22860 23876 29845 30480 32258 33840 35814 36576 45720 47752 48387 53721 59690 60960 64516 67680 71628 80645 89535 91440 95504 96774 107442 119380 129032 143256 145161 161290 179070 182880 191008 193548 214884 238760 241935 258064 268605 286512 290322 322580 358140 387096 429768 477520 483870 516128 537210 573024 580644 645160 716280 725805 758063 774192 859536 955040 967740 1074420 1161288 1290320 1432560 1451610 1516126 1548384 1719072 1935480 2048383 2148840 2274189 2322576 2580640 2865120 2903220 3032252 3790315 3870960 4096766 4297680 4548378 4645152 5806440 6064504 6145149 6822567 7580630 7741920 8193532 8595360 9096756 10241915 11370945 11612880 12129008 12290298 13645134 15161260 16387064 18193512 18435447 20483830 22741890 23225760 24258016 24580596 27290268 30322520 30725745 32774128 34112835 36387024 36870894 40967660 45483780 49161192 54580536 60645040 61451490 65548256 68225670 72774048 73741788 81935320 90967560 92177235 96274001 98322384 109161072 121290080 122902980 136451340 147483576 163870640 181935120 184354470 192548002 196644768 218322144 245805960 272902680 288822003 294967152 327741280 363870240 368708940 385096004 481370005 491611920 545805360 577644006 589934304 737417880 770192008 866466009 962740010 983223840 1091610720 1155288012 1444110015 1474835760 1540384016 1732932018 1925480020 2310576024 2888220030 2949671520 3080768032 3465864036 3850960040 4332330045 4621152048 5776440060 6931728072 7701920080 8664660090 9242304096 11552880120 13863456144 15403840160 17329320180 23105760240 27726912288 34658640360 46211520480 69317280720 138634561440
• Sum of all divisors σ(n): 486990766080
• Sum of proper divisors (its aliquot sum) s(n): 348356204640
• 138634561440 is an abundant number, because the sum of its proper divisors (348356204640) is greater than itself. Its abundance is 209721643200

Bases of 138634561440

• Binary: 10000001000111010000111000011110100000₂
• Hexadecimal: 0x20474387A0
• Base-36: 1RORFS80

Squares and roots of 138634561440

• 138634561440 squared (138634561440²) is 19219541625661134873600
• 138634561440 cubed (138634561440³) is 2664492724351356083254225833984000
• The square root of 138634561440 is 372336.6238231205
• The cube root of 138634561440 is 5175.5578937849

Scales and comparisons

• 138,634,561,440 seconds is equal to 4,408 years, 7 weeks, 5 days, 16 hours, 24 minutes.
• To count from 1 to 138,634,561,440 would take you about eight thousand, eight hundred sixteen 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 138634561440 cubic inches would be around 431.3 feet tall.

Recreational maths with 138634561440

• 138634561440 backwards is 044165436831
• 138634561440 is a Harshad number.
• The number of decimal digits it has is: 12
• The sum of 138634561440's digits is 45
• More coming soon!