81027227988

Names of 81027227988

• Cardinal: 81027227988 can be written as Eighty-one billion, twenty-seven million, two hundred twenty-seven thousand, nine hundred eighty-eight.

Scientific notation

• Scientific notation: 8.1027227988 × 10¹⁰

Factors of 81027227988

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 718

Divisors of 81027227988

• Number of divisors d(n): 480
• Complete list of divisors:
  1 2 3 4 6 7 9 12 14 18 21 23 27 28 31 36 42 46 54 62 63 69 81 84 89 92 93 108 124 126 138 161 162 178 186 189 207 217 252 267 276 279 322 324 356 372 378 414 434 483 534 558 563 567 621 623 644 651 713 756 801 828 837 868 966 1068 1116 1126 1134 1242 1246 1302 1426 1449 1602 1674 1689 1863 1869 1932 1953 2047 2139 2252 2268 2403 2484 2492 2511 2604 2759 2852 2898 3204 3348 3378 3726 3738 3906 3941 4094 4278 4347 4806 4991 5022 5067 5518 5607 5796 5859 6141 6417 6756 7209 7452 7476 7812 7882 8188 8277 8556 8694 9612 9982 10044 10134 11036 11214 11718 11823 12282 12834 12949 13041 14329 14418 14973 15201 15764 16554 16821 17388 17453 17577 18423 19251 19313 19964 20268 22428 23436 23646 24564 24831 25668 25898 26082 28658 28836 29946 30402 33108 33642 34906 35154 35469 36846 38502 38626 38847 42987 44919 45603 47292 49662 50107 50463 51796 52164 52359 55269 57316 57753 57939 59892 60804 63457 67284 69812 70308 70938 73692 74493 77004 77252 77694 85974 89838 90643 91206 99324 100214 100926 104718 106407 110538 115506 115878 116541 122171 126914 128961 134757 141876 148986 150321 155388 157077 165807 171948 173817 179676 181286 182412 190371 200428 201852 209436 212814 221076 223479 231012 231756 233082 244342 253828 257922 269514 271929 297972 300642 314154 319221 331614 347634 349623 350749 362572 366513 380742 386883 401419 404271 425628 444199 446958 450963 466164 471231 488684 515844 521451 539028 543858 571113 601284 628308 638442 663228 695268 699246 701498 733026 761484 773766 802838 808542 815787 888398 893916 901926 942462 1042902 1048869 1052247 1087716 1099539 1142226 1152461 1160649 1204257 1276884 1332597 1352889 1398492 1402996 1413693 1466052 1547532 1553317 1564353 1605676 1617084 1631574 1713339 1776796 1803852 1884924 2085804 2097738 2104494 2199078 2284452 2304922 2321298 2408514 2447361 2665194 2705778 2809933 2827386 3106634 3128706 3156741 3263148 3298617 3426678 3457383 3612771 3997791 4058667 4195476 4208988 4398156 4609844 4642596 4659951 4817028 4894722 5140017 5330388 5411556 5619866 5654772 6213268 6257412 6313482 6597234 6853356 6914766 7225542 7342083 7995582 8067227 8117334 8429799 9319902 9470223 9789444 9895851 10280034 10372149 10838313 10873219 11239732 11993373 12626964 13194468 13829532 13979853 14451084 14684166 15991164 16134454 16234668 16859598 18639804 18940446 19791702 20560068 20744298 21676626 21746438 23986746 24201681 25289397 27959706 28410669 29368332 31116447 32268908 32514939 32619657 33719196 35726291 35980119 37880892 39583404 41488596 41939559 43353252 43492876 47973492 48403362 50578794 55919412 56821338 62232894 65029878 65239314 71452582 71960238 72605043 75868191 83879118 93349341 96806724 97858971 101157588 107178873 113642676 124465788 125818677 130059756 130478628 142905164 143920476 145210086 151736382 167758236 186698682 195717942 214357746 217815129 227604573 250084037 251637354 290420172 293576913 303472764 321536619 373397364 391435884 428715492 435630258 455209146 500168074 503274708 587153826 643073238 653445387 750252111 871260516 880730739 910418292 964609857 1000336148 1174307652 1286146476 1306890774 1500504222 1761461478 1929219714 2250756333 2613781548 2893829571 3001008444 3522922956 3858439428 4501512666 5787659142 6752268999 9003025332 11575318284 13504537998 20256806997 27009075996 40513613994 81027227988
• Sum of all divisors σ(n): 264153415680
• Sum of proper divisors (its aliquot sum) s(n): 183126187692
• 81027227988 is an abundant number, because the sum of its proper divisors (183126187692) is greater than itself. Its abundance is 102098959704

Bases of 81027227988

• Binary: 1001011011101100110010110000101010100₂
• Hexadecimal: 0x12DD996154
• Base-36: 1181IP90

Squares and roots of 81027227988

• 81027227988 squared (81027227988²) is 6565411675419330528144
• 81027227988 cubed (81027227988³) is 531977108659279150206252338494272
• The square root of 81027227988 is 284652.8200949359
• The cube root of 81027227988 is 4327.2334659183

Scales and comparisons

• 81,027,227,988 seconds is equal to 2,576 years, 21 weeks, 4 days, 3 hours, 19 minutes, 48 seconds.
• To count from 1 to 81,027,227,988 would take you about five thousand, one hundred fifty-two 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 81027227988 cubic inches would be around 360.6 feet tall.

Recreational maths with 81027227988

• 81027227988 backwards is 88972272018
• 81027227988 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 81027227988's digits is 54
• More coming soon!