3945943872

Names of 3945943872

• Cardinal: 3945943872 can be written as Three billion, nine hundred forty-five million, nine hundred forty-three thousand, eight hundred seventy-two.

Scientific notation

• Scientific notation: 3.945943872 × 10⁹

Factors of 3945943872

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 329

Divisors of 3945943872

• Number of divisors d(n): 336
• Complete list of divisors:
  1 2 3 4 6 8 9 12 13 16 18 24 26 31 32 36 39 48 52 62 64 72 78 89 93 96 104 117 124 144 156 178 186 191 192 208 234 248 267 279 288 312 356 372 382 403 416 468 496 534 558 573 576 624 712 744 764 801 806 832 936 992 1068 1116 1146 1157 1209 1248 1424 1488 1528 1602 1612 1719 1872 1984 2136 2232 2292 2314 2418 2483 2496 2759 2848 2976 3056 3204 3224 3438 3471 3627 3744 4272 4464 4584 4628 4836 4966 5518 5696 5921 5952 6112 6408 6448 6876 6942 7254 7449 7488 8277 8544 8928 9168 9256 9672 9932 10413 11036 11842 12224 12816 12896 13752 13884 14508 14898 16554 16999 17088 17763 17856 18336 18512 19344 19864 20826 22072 22347 23684 24831 25632 25792 27504 27768 29016 29796 33108 33998 35526 35867 36672 37024 38688 39728 41652 44144 44694 47368 49662 50997 51264 53289 55008 55536 58032 59592 66216 67996 71052 71734 74048 76973 77376 79456 83304 88288 89388 94736 99324 101994 106578 107601 110016 111072 116064 119184 132432 135992 142104 143468 152991 153946 158912 166608 176576 178776 189472 198648 203988 213156 215202 220987 222144 230919 232128 238368 264864 271984 284208 286936 305982 307892 322803 333216 357552 378944 397296 407976 426312 430404 441974 461838 476736 526969 529728 543968 568416 573872 611964 615784 645606 662961 666432 692757 715104 794592 815952 852624 860808 883948 923676 1053938 1087936 1136832 1147744 1223928 1231568 1291212 1325922 1385514 1430208 1580907 1589184 1631904 1705248 1721616 1767896 1847352 1988883 2107876 2295488 2447856 2463136 2582424 2651844 2771028 3161814 3263808 3410496 3443232 3535792 3694704 3977766 4215752 4742721 4895712 4926272 5164848 5303688 5542056 6323628 6850597 6886464 7071584 7389408 7955532 8431504 9485442 9791424 10329696 10607376 11084112 12647256 13701194 14143168 14778816 15911064 16863008 18970884 20551791 20659392 21214752 22168224 25294512 27402388 31822128 33726016 37941768 41103582 42429504 44336448 50589024 54804776 61655373 63644256 75883536 82207164 101178048 109609552 123310746 127288512 151767072 164414328 219219104 246621492 303534144 328828656 438438208 493242984 657657312 986485968 1315314624 1972971936 3945943872
• Sum of all divisors σ(n): 12781117440
• Sum of proper divisors (its aliquot sum) s(n): 8835173568
• 3945943872 is an abundant number, because the sum of its proper divisors (8835173568) is greater than itself. Its abundance is 4889229696

Bases of 3945943872

• Binary: 11101011001100100101001101000000₂
• Hexadecimal: 0xEB325340
• Base-36: 1T9B9S0

Squares and roots of 3945943872

• 3945943872 squared (3945943872²) is 15570473040974352384
• 3945943872 cubed (3945943872³) is 61440212680173950698813390848
• The square root of 3945943872 is 62816.7483399133
• The cube root of 3945943872 is 1580.2178666615

Scales and comparisons

• 3,945,943,872 seconds is equal to 125 years, 24 weeks, 2 days, 15 hours, 31 minutes, 12 seconds.
• To count from 1 to 3,945,943,872 would take you about two hundred fifty 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 3945943872 cubic inches would be around 131.7 feet tall.

Recreational maths with 3945943872

• 3945943872 backwards is 2783495493
• The number of decimal digits it has is: 10
• The sum of 3945943872's digits is 54
• More coming soon!