1388543940

Names of 1388543940

• Cardinal: 1388543940 can be written as One billion, three hundred eighty-eight million, five hundred forty-three thousand, nine hundred forty.

Scientific notation

• Scientific notation: 1.38854394 × 10⁹

Factors of 1388543940

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 1938

Divisors of 1388543940

• Number of divisors d(n): 288
• Complete list of divisors:
  1 2 3 4 5 6 7 9 10 12 14 15 18 19 20 21 28 30 31 35 36 38 42 45 57 60 62 63 70 76 84 90 93 95 105 114 124 126 133 140 155 171 180 186 190 210 217 228 252 266 279 285 310 315 342 372 380 399 420 434 465 532 558 570 589 620 630 651 665 684 798 855 868 930 1085 1116 1140 1178 1197 1260 1302 1330 1395 1596 1710 1767 1860 1871 1953 1995 2170 2356 2394 2604 2660 2790 2945 3255 3420 3534 3742 3906 3990 4123 4340 4788 5301 5580 5613 5890 5985 6510 7068 7484 7812 7980 8246 8835 9355 9765 10602 11226 11780 11970 12369 13020 13097 16492 16839 17670 18710 19530 20615 21204 22452 23940 24738 26194 26505 28065 33678 35340 35549 37107 37420 39060 39291 41230 49476 52388 53010 56130 58001 61845 65485 67356 71098 74214 78582 82460 84195 106020 106647 112260 116002 117873 123690 130970 142196 148428 157164 168390 174003 177745 185535 196455 213294 232004 235746 247380 248843 261940 290005 319941 336780 348006 355490 371070 392910 406007 426588 471492 497686 522009 533235 580010 589365 639882 696012 710980 742140 746529 785820 812014 870015 995372 1044018 1066470 1102019 1160020 1178730 1218021 1244215 1279764 1493058 1599705 1624028 1740030 2030035 2088036 2132940 2204038 2239587 2357460 2436042 2488430 2610045 2986116 3199410 3306057 3480060 3654063 3732645 4060070 4408076 4479174 4872084 4976860 5220090 5510095 6090105 6398820 6612114 7308126 7465290 7714133 8120140 8958348 9918171 10440180 11020190 11197935 12180210 13224228 14616252 14930580 15428266 16530285 18270315 19836342 22040380 22395870 23142399 24360420 30856532 33060570 36540630 38570665 39672684 44791740 46284798 49590855 66121140 69427197 73081260 77141330 92569596 99181710 115711995 138854394 154282660 198363420 231423990 277708788 347135985 462847980 694271970 1388543940
• Sum of all divisors σ(n): 5233213440
• Sum of proper divisors (its aliquot sum) s(n): 3844669500
• 1388543940 is an abundant number, because the sum of its proper divisors (3844669500) is greater than itself. Its abundance is 2456125560

Bases of 1388543940

• Binary: 1010010110000110111111111000100₂
• Hexadecimal: 0x52C37FC4
• Base-36: MYPBD0

Squares and roots of 1388543940

• 1388543940 squared (1388543940²) is 1928054273310723600
• 1388543940 cubed (1388543940³) is 2677188077196708991794984000
• The square root of 1388543940 is 37263.1713626203
• The cube root of 1388543940 is 1115.6292077613

Scales and comparisons

• 1,388,543,940 seconds is equal to 44 years, 7 weeks, 6 days, 2 hours, 39 minutes.
• To count from 1 to 1,388,543,940 would take you about eighty-eight 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 1388543940 cubic inches would be around 93 feet tall.

Recreational maths with 1388543940

• 1388543940 backwards is 0493458831
• 1388543940 is a Harshad number.
• The number of decimal digits it has is: 10
• The sum of 1388543940's digits is 45
• More coming soon!