8121420384

Names of 8121420384

• Cardinal: 8121420384 can be written as Eight billion, one hundred twenty-one million, four hundred twenty thousand, three hundred eighty-four.

Scientific notation

• Scientific notation: 8.121420384 × 10⁹

Factors of 8121420384

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 402

Divisors of 8121420384

• Number of divisors d(n): 384
• Complete list of divisors:
  1 2 3 4 6 7 8 11 12 14 16 21 22 24 28 32 33 41 42 44 48 56 66 77 82 84 88 96 112 123 127 132 154 164 168 176 211 224 231 246 254 264 287 308 328 336 352 381 422 451 462 492 508 528 574 616 633 656 672 762 844 861 889 902 924 984 1016 1056 1148 1232 1266 1312 1353 1397 1477 1524 1688 1722 1778 1804 1848 1968 2032 2296 2321 2464 2532 2667 2706 2794 2954 3048 3157 3376 3444 3556 3608 3696 3936 4064 4191 4431 4592 4642 5064 5207 5334 5412 5588 5908 6096 6314 6752 6888 6963 7112 7216 7392 8382 8651 8862 9184 9284 9471 9779 10128 10414 10668 10824 11176 11816 12192 12628 13776 13926 14224 14432 15621 16247 16764 17302 17724 18568 18942 19558 20256 20828 21336 21648 22352 23632 25256 25953 26797 27552 27852 28448 29337 31242 32494 33528 34604 35448 36449 37136 37884 39116 41656 42672 43296 44704 47264 48741 50512 51906 53594 55704 57277 58674 60557 62484 64988 67056 69208 70896 72898 74272 75768 78232 80391 83312 85344 95161 97482 101024 103812 107188 109347 111408 114554 117348 121114 124968 129976 134112 138416 141792 145796 151536 156464 160782 166624 171831 181671 187579 190322 194964 207624 214376 218694 222816 229108 234696 242228 249936 259952 276832 285483 291592 294767 303072 312928 321564 343662 363342 375158 380644 389928 400939 415248 428752 437388 458216 469392 484456 499872 519904 562737 570966 583184 589534 643128 666127 687324 726684 750316 761288 779856 801878 830496 857504 874776 884301 916432 938784 968912 1098677 1125474 1141932 1166368 1179068 1202817 1286256 1332254 1374648 1453368 1500632 1522576 1559712 1603756 1749552 1768602 1832864 1937824 1998381 2063369 2197354 2250948 2283864 2358136 2405634 2572512 2664508 2749296 2906736 3001264 3045152 3207512 3296031 3499104 3537204 3996762 4126738 4394708 4501896 4567728 4716272 4811268 5329016 5498592 5813472 6002528 6190107 6415024 6592062 7074408 7690739 7993524 8253476 8789416 9003792 9135456 9432544 9622536 10658032 12085447 12380214 12830048 13184124 14148816 15381478 15987048 16506952 17578832 18007584 19245072 21316064 23072217 24170894 24760428 26368248 28297632 30762956 31974096 33013904 35157664 36256341 38490144 46144434 48341788 49520856 52736496 61525912 63948192 66027808 72512682 84598129 92288868 96683576 99041712 105472992 123051824 145025364 169196258 184577736 193367152 198083424 246103648 253794387 290050728 338392516 369155472 386734304 507588774 580101456 676785032 738310944 1015177548 1160202912 1353570064 2030355096 2707140128 4060710192 8121420384
• Sum of all divisors σ(n): 27571912704
• Sum of proper divisors (its aliquot sum) s(n): 19450492320
• 8121420384 is an abundant number, because the sum of its proper divisors (19450492320) is greater than itself. Its abundance is 11329071936

Bases of 8121420384

• Binary: 111100100000100110000101001100000₂
• Hexadecimal: 0x1E4130A60
• Base-36: 3QBA82O

Squares and roots of 8121420384

• 8121420384 squared (8121420384²) is 65957469053650707456
• 8121420384 cubed (8121420384³) is 535668333649368045149179183104
• The square root of 8121420384 is 90118.9235621463
• The cube root of 8121420384 is 2010.0676019933

Scales and comparisons

• 8,121,420,384 seconds is equal to 258 years, 12 weeks, 1 day, 22 hours, 6 minutes, 24 seconds.
• To count from 1 to 8,121,420,384 would take you about five 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 8121420384 cubic inches would be around 167.5 feet tall.

Recreational maths with 8121420384

• 8121420384 backwards is 4830241218
• 8121420384 is a Harshad number.
• The number of decimal digits it has is: 10
• The sum of 8121420384's digits is 33
• More coming soon!