81528467328

Names of 81528467328

• Cardinal: 81528467328 can be written as Eighty-one billion, five hundred twenty-eight million, four hundred sixty-seven thousand, three hundred twenty-eight.

Scientific notation

• Scientific notation: 8.1528467328 × 10¹⁰

Factors of 81528467328

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 17
• Sum of prime factors: 1644

Divisors of 81528467328

• Number of divisors d(n): 672
• Complete list of divisors:
  1 2 3 4 6 7 8 9 11 12 14 16 18 21 22 24 27 28 32 33 36 42 44 48 49 54 56 63 64 66 72 77 81 84 88 96 98 99 108 112 126 128 132 144 147 154 162 168 176 189 192 196 198 216 224 231 243 252 264 288 294 297 308 324 336 352 378 384 392 396 432 441 448 462 486 504 528 539 567 576 588 594 616 648 672 693 704 729 756 784 792 864 882 891 896 924 972 1008 1056 1078 1134 1152 1176 1188 1232 1296 1323 1344 1386 1408 1458 1512 1568 1584 1617 1621 1701 1728 1764 1782 1848 1944 2016 2079 2112 2156 2268 2352 2376 2464 2592 2646 2673 2688 2772 2916 3024 3136 3168 3234 3242 3402 3456 3528 3564 3696 3888 3969 4032 4158 4224 4312 4536 4704 4752 4851 4863 4928 5103 5184 5292 5346 5544 5832 6048 6237 6272 6336 6468 6484 6804 7056 7128 7392 7776 7938 8019 8064 8316 8624 9072 9408 9504 9702 9726 9856 10206 10368 10584 10692 11088 11347 11664 11907 12096 12474 12672 12936 12968 13608 14112 14256 14553 14589 14784 15552 15876 16038 16632 17248 17831 18144 18711 18816 19008 19404 19452 20412 21168 21384 22176 22694 23328 23814 24192 24948 25872 25936 27216 28224 28512 29106 29178 29568 31104 31752 32076 33264 34041 34496 35662 35721 36288 37422 38016 38808 38904 40824 42336 42768 43659 43767 44352 45388 46656 47628 49896 51744 51872 53493 54432 56133 56448 57024 58212 58356 63504 64152 66528 68082 68992 71324 71442 72576 74844 77616 77808 79429 81648 84672 85536 87318 87534 88704 90776 93312 95256 99792 102123 103488 103744 106986 108864 112266 114048 116424 116712 124817 127008 128304 130977 131301 133056 136164 142648 142884 149688 155232 155616 158858 160479 163296 169344 171072 174636 175068 181552 190512 199584 204246 206976 207488 213972 217728 224532 232848 233424 238287 249634 254016 256608 261954 262602 266112 272328 285296 285768 299376 306369 310464 311232 317716 320958 326592 342144 349272 350136 363104 374451 381024 392931 393903 399168 408492 427944 449064 465696 466848 476574 481437 499268 508032 513216 523908 525204 544656 570592 571536 598752 612738 620928 622464 635432 641916 653184 698544 700272 714861 726208 748902 762048 785862 787806 798336 816984 855888 873719 898128 919107 931392 933696 953148 962874 998536 1026432 1047816 1050408 1089312 1123353 1141184 1143072 1181709 1197504 1225476 1270864 1283832 1397088 1400544 1429722 1444311 1452416 1497804 1524096 1571724 1575612 1633968 1711776 1747438 1796256 1838214 1862784 1867392 1906296 1925748 1997072 2095632 2100816 2144583 2178624 2246706 2282368 2286144 2363418 2395008 2450952 2541728 2567664 2621157 2757321 2794176 2801088 2859444 2888622 2995608 3143448 3151224 3267936 3370059 3423552 3494876 3592512 3676428 3812592 3851496 3994144 4191264 4201632 4289166 4332933 4357248 4493412 4572288 4726836 4901904 5083456 5135328 5242314 5514642 5588352 5602176 5718888 5777244 5991216 6286896 6302448 6433749 6535872 6740118 6847104 6989752 7185024 7352856 7625184 7702992 7863471 7988288 8271963 8382528 8403264 8578332 8665866 8986824 9453672 9803808 10110177 10166912 10270656 10484628 11029284 11437776 11554488 11982432 12573792 12604896 12867498 12998799 13071744 13480236 13979504 14705712 15250368 15405984 15726942 15976576 16543926 16765056 16806528 17156664 17331732 17973648 18907344 19301247 19607616 20220354 20541312 20969256 22058568 22875552 23108976 23590413 23964864 25147584 25209792 25734996 25997598 26960472 27959008 29411424 30330531 30500736 30811968 31453884 33087852 34313328 34663464 35947296 37814688 38602494 39215232 40440708 41938512 44117136 45751104 46217952 47180826 47929728 50295168 50419584 51469992 51995196 53920944 55918016 57903741 58822848 60661062 61623936 62907768 66175704 68626656 69326928 70771239 71894592 75629376 77204988 80881416 83877024 88234272 90991593 91502208 92435904 94361652 102939984 103990392 107841888 111836032 115807482 117645696 121322124 125815536 132351408 137253312 138653856 141542478 143789184 151258752 154409976 161762832 167754048 176468544 181983186 184871808 188723304 205879968 207980784 212313717 215683776 231614964 242644248 251631072 264702816 274506624 277307712 283084956 308819952 323525664 335508096 352937088 363966372 377446608 411759936 415961568 424627434 431367552 463229928 485288496 503262144 529405632 554615424 566169912 617639904 636941151 647051328 727932744 754893216 823519872 831923136 849254868 926459856 970576992 1006524288 1058811264 1132339824 1235279808 1273882302 1294102656 1455865488 1509786432 1663846272 1698509736 1852919712 1941153984 2264679648 2470559616 2547764604 2911730976 3019572864 3397019472 3705839424 3882307968 4529359296 5095529208 5823461952 6794038944 7411678848 9058718592 10191058416 11646923904 13588077888 20382116832 27176155776 40764233664 81528467328
• Sum of all divisors σ(n): 309219799320
• Sum of proper divisors (its aliquot sum) s(n): 227691331992
• 81528467328 is an abundant number, because the sum of its proper divisors (227691331992) is greater than itself. Its abundance is 146162864664

Bases of 81528467328

• Binary: 1001011111011011110011010111110000000₂
• Hexadecimal: 0x12FB79AF80
• Base-36: 11GBY000

Squares and roots of 81528467328

• 81528467328 squared (81528467328²) is 6646890984852763459584
• 81528467328 cubed (81528467328³) is 541910834491346268605206392471552
• The square root of 81528467328 is 285531.9024697591
• The cube root of 81528467328 is 4336.1379725799

Scales and comparisons

• 81,528,467,328 seconds is equal to 2,592 years, 18 weeks, 2 days, 12 hours, 28 minutes, 48 seconds.
• To count from 1 to 81,528,467,328 would take you about five thousand, one hundred eighty-four 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 81528467328 cubic inches would be around 361.3 feet tall.

Recreational maths with 81528467328

• 81528467328 backwards is 82376482518
• 81528467328 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 81528467328's digits is 54
• More coming soon!