391234138128

Names of 391234138128

• Cardinal: 391234138128 can be written as Three hundred ninety-one billion, two hundred thirty-four million, one hundred thirty-eight thousand, one hundred twenty-eight.

Scientific notation

• Scientific notation: 3.91234138128 × 10¹¹

Factors of 391234138128

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 399

Divisors of 391234138128

• Number of divisors d(n): 200
• Complete list of divisors:
  1 2 3 4 6 8 9 12 16 18 24 27 36 48 54 72 81 101 108 144 162 202 216 293 303 324 404 432 586 606 648 808 879 909 1172 1212 1296 1616 1758 1818 2344 2424 2637 2727 3516 3636 4688 4848 5274 5454 7032 7272 7911 8181 10201 10548 10908 14064 14544 15822 16362 20402 21096 21816 23733 29593 30603 31644 32724 40804 42192 43632 47466 59186 61206 63288 65448 81608 88779 91809 94932 118372 122412 126576 130896 163216 177558 183618 189864 236744 244824 266337 275427 355116 367236 379728 473488 489648 532674 550854 710232 734472 799011 826281 1030301 1065348 1101708 1420464 1468944 1598022 1652562 2060602 2130696 2203416 2397033 2988893 3090903 3196044 3305124 4121204 4261392 4406832 4794066 5977786 6181806 6392088 6610248 8242408 8966679 9272709 9588132 11955572 12363612 12784176 13220496 16484816 17933358 18545418 19176264 23911144 24727224 26900037 27818127 35866716 37090836 38352528 47822288 49454448 53800074 55636254 71733432 74181672 80700111 83454381 107600148 111272508 143466864 148363344 161400222 166908762 215200296 222545016 242100333 301878193 322800444 333817524 430400592 445090032 484200666 603756386 645600888 667635048 905634579 968401332 1207512772 1291201776 1335270096 1811269158 1936802664 2415025544 2716903737 3622538316 3873605328 4830051088 5433807474 7245076632 8150711211 10867614948 14490153264 16301422422 21735229896 24452133633 32602844844 43470459792 48904267266 65205689688 97808534532 130411379376 195617069064 391234138128
• Sum of all divisors σ(n): 1147571847576
• Sum of proper divisors (its aliquot sum) s(n): 756337709448
• 391234138128 is an abundant number, because the sum of its proper divisors (756337709448) is greater than itself. Its abundance is 365103571320

Bases of 391234138128

• Binary: 101101100010111010111110011000000010000₂
• Hexadecimal: 0x5B175F3010
• Base-36: 4ZQAPD00

Squares and roots of 391234138128

• 391234138128 squared (391234138128²) is 153064150836758983344384
• 391234138128 cubed (391234138128³) is 59883921130913590869601581249073152
• The square root of 391234138128 is 625487.1206731599
• The cube root of 391234138128 is 7313.8421176167

Scales and comparisons

• 391,234,138,128 seconds is equal to 12,440 years, 1 week, 5 days, 21 hours, 28 minutes, 48 seconds.
• To count from 1 to 391,234,138,128 would take you about twenty-four thousand, eight hundred eighty 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 391234138128 cubic inches would be around 609.5 feet tall.

Recreational maths with 391234138128

• 391234138128 backwards is 821831432193
• The number of decimal digits it has is: 12
• The sum of 391234138128's digits is 45
• More coming soon!