128396687328

Names of 128396687328

• Cardinal: 128396687328 can be written as One hundred twenty-eight billion, three hundred ninety-six million, six hundred eighty-seven thousand, three hundred twenty-eight.

Scientific notation

• Scientific notation: 1.28396687328 × 10¹¹

Factors of 128396687328

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 14
• Sum of prime factors: 3246

Divisors of 128396687328

• Number of divisors d(n): 480
• Complete list of divisors:
  1 2 3 4 6 7 8 9 12 13 14 16 18 21 24 26 27 28 32 36 39 42 48 52 54 56 63 72 78 81 84 91 96 104 108 112 117 126 144 156 162 168 169 182 189 208 216 224 234 252 273 288 312 324 336 338 351 364 378 416 432 468 504 507 546 567 624 648 672 676 702 728 756 819 864 936 1008 1014 1053 1092 1134 1183 1248 1296 1352 1404 1456 1512 1521 1638 1872 2016 2028 2106 2184 2197 2268 2366 2457 2592 2704 2808 2912 3024 3042 3221 3276 3549 3744 4056 4212 4368 4394 4536 4563 4732 4914 5408 5616 6048 6084 6442 6552 6591 7098 7371 8112 8424 8736 8788 9072 9126 9464 9663 9828 10647 11232 12168 12884 13104 13182 13689 14196 14742 15379 16224 16848 17576 18144 18252 18928 19326 19656 19773 21294 22547 24336 25768 26208 26364 27378 28392 28989 29484 30758 31941 33696 35152 36504 37856 38652 39312 39546 41873 42588 45094 46137 48672 51536 52728 54756 56784 57978 58968 59319 61516 63882 67641 70304 73008 77304 78624 79092 83746 85176 86967 90188 92274 95823 103072 105456 109512 113568 115956 117936 118638 123032 125619 127764 135282 138411 146016 154608 158184 167492 170352 173934 177957 180376 184548 191646 202923 210912 219024 231912 235872 237276 246064 251238 255528 260901 270564 276822 293111 309216 316368 334984 340704 347868 355914 360752 369096 376857 383292 405846 415233 438048 463824 474552 492128 502476 511056 521802 541128 544349 553644 586222 608769 632736 669968 695736 711828 721504 738192 753714 766584 811692 830466 879333 927648 949104 1004952 1022112 1043604 1082256 1088698 1107288 1130571 1172444 1217538 1245699 1339936 1391472 1423656 1476384 1507428 1533168 1623384 1633047 1660932 1758666 1826307 1898208 2009904 2087208 2164512 2177396 2214576 2261142 2344888 2435076 2491398 2637999 2782944 2847312 3014856 3066336 3246768 3266094 3321864 3391713 3517332 3652614 3810443 4019808 4174416 4354792 4429152 4522284 4689776 4870152 4899141 4982796 5275998 5694624 6029712 6493536 6532188 6643728 6783426 7034664 7076537 7305228 7620886 7913997 8348832 8709584 9044568 9379552 9740304 9798282 9965592 10551996 11431329 12059424 13064376 13287456 13566852 14069328 14153074 14610456 14697423 15241772 15827994 17419168 18089136 19480608 19596564 19931184 21103992 21229611 22862658 23741991 26128752 27133704 28138656 28306148 29220912 29394846 30483544 31655988 34293987 36178272 39193128 39862368 42207984 42459222 44092269 45725316 47483982 49535759 52257504 54267408 56612296 58441824 58789692 60967088 63311976 63688833 68587974 78386256 84415968 84918444 88184538 91450632 94967964 99071518 102881961 108534816 113224592 117579384 121934176 126623952 127377666 137175948 148607277 156772512 169836888 176369076 182901264 189935928 191066499 198143036 205763922 226449184 235158768 253247904 254755332 274351896 297214554 308645883 339673776 352738152 365802528 379871856 382132998 396286072 411527844 445821831 470317536 509510664 548703792 573199497 594429108 617291766 679347552 705476304 759743712 764265996 792572144 823055688 891643662 1019021328 1097407584 1146398994 1188858216 1234583532 1337465493 1410952608 1528531992 1585144288 1646111376 1783287324 2038042656 2292797988 2377716432 2469167064 2674930986 3057063984 3292222752 3566574648 4012396479 4585595976 4755432864 4938334128 5349861972 6114127968 7133149296 8024792958 9171191952 9876668256 10699723944 14266298592 16049585916 18342383904 21399447888 32099171832 42798895776 64198343664 128396687328
• Sum of all divisors σ(n): 467647266240
• Sum of proper divisors (its aliquot sum) s(n): 339250578912
• 128396687328 is an abundant number, because the sum of its proper divisors (339250578912) is greater than itself. Its abundance is 210853891584

Bases of 128396687328

• Binary: 1110111100101000010011111011111100000₂
• Hexadecimal: 0x1DE509F7E0
• Base-36: 1MZG2M00

Squares and roots of 128396687328

• 128396687328 squared (128396687328²) is 16485709316804195779584
• 128396687328 cubed (128396687328³) is 2116710464530004821709744053911552
• The square root of 128396687328 is 358324.8349305417
• The cube root of 128396687328 is 5044.8850255587

Scales and comparisons

• 128,396,687,328 seconds is equal to 4,082 years, 32 weeks, 18 hours, 28 minutes, 48 seconds.
• To count from 1 to 128,396,687,328 would take you about eight thousand, one hundred sixty-five 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 128396687328 cubic inches would be around 420.4 feet tall.

Recreational maths with 128396687328

• 128396687328 backwards is 823786693821
• 128396687328 is a Harshad number.
• The number of decimal digits it has is: 12
• The sum of 128396687328's digits is 63
• More coming soon!