21217465999728

Names of 21217465999728

• Cardinal: 21217465999728 can be written as Twenty-one trillion, two hundred seventeen billion, four hundred sixty-five million, nine hundred ninety-nine thousand, seven hundred twenty-eight.

Scientific notation

• Scientific notation: 2.1217465999728 × 10¹³

Factors of 21217465999728

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 16
• Sum of prime factors: 1968

Divisors of 21217465999728

• Number of divisors d(n): 540
• Complete list of divisors:
  1 2 3 4 6 8 9 12 16 18 24 27 31 36 48 54 59 62 72 81 93 108 118 124 144 162 177 186 216 236 243 248 279 324 354 372 432 472 486 496 531 558 648 708 729 744 837 944 972 1062 1116 1296 1416 1458 1488 1593 1674 1829 1873 1944 2124 2187 2232 2511 2832 2916 3186 3348 3481 3658 3746 3888 4248 4374 4464 4779 5022 5487 5619 5832 6372 6561 6696 6962 7316 7492 7533 8496 8748 9558 10044 10443 10974 11238 11664 12744 13122 13392 13924 14337 14632 14984 15066 16461 16857 17496 19116 20088 20886 21948 22476 22599 25488 26244 27848 28674 29264 29968 30132 31329 32922 33714 34992 38232 40176 41772 43011 43896 44952 45198 49383 50571 52488 55696 57348 58063 60264 62658 65844 67428 67797 76464 83544 86022 87792 89904 90396 93987 98766 101142 104976 107911 110507 114696 116126 120528 125316 129033 131688 134856 135594 148149 151713 167088 172044 174189 180792 187974 197532 202284 203391 215822 221014 229392 232252 250632 258066 263376 269712 271188 281961 296298 303426 323733 331521 344088 348378 361584 375948 387099 395064 404568 406782 431644 442028 444447 455139 464504 501264 516132 522567 542376 563922 592596 606852 647466 663042 688176 696756 751896 774198 790128 809136 813564 845883 863288 884056 888894 910278 929008 971199 994563 1032264 1045134 1084752 1127844 1185192 1213704 1294932 1326084 1333341 1365417 1393512 1503792 1548396 1567701 1627128 1691766 1726576 1768112 1777788 1820556 1942398 1989126 2064528 2090268 2255688 2370384 2427408 2537649 2589864 2652168 2666682 2730834 2787024 2913597 2983689 3096792 3135402 3254256 3383532 3425717 3555576 3641112 3884796 3978252 4000023 4096251 4180536 4511376 4703103 5075298 5179728 5304336 5333364 5461668 5827194 5967378 6193584 6270804 6519913 6767064 6851434 7111152 7282224 7612947 7769592 7956504 8000046 8192502 8361072 8740791 8951067 9406206 10150596 10277151 10666728 10923336 11654388 11934756 12000069 12288753 12541608 13039826 13534128 13702868 14109309 15225894 15539184 15913008 16000092 16385004 17481582 17902134 18812412 19559739 20301192 20554302 21333456 21846672 22838841 23308776 23869512 24000138 24577506 25083216 26079652 26222373 26853201 27405736 28218618 30451788 30831453 32000184 32770008 34963164 35804268 37624824 39119478 40602384 41108604 42327927 45677682 46617552 47739024 48000276 49155012 52159304 52444746 53706402 54811472 56437236 58679217 60903576 61662906 64000368 65540016 69926328 71608536 75249648 78238956 78667119 80559603 82217208 84655854 91355364 92494359 96000552 98310024 104318608 104889492 107412804 112874472 117358434 121807152 123325812 126983781 139852656 143217072 156477912 157334238 161119206 164434416 169311708 176037651 182710728 184988718 192001104 196620048 202117303 209778984 214825608 225748944 234716868 236001357 241678809 246651624 253967562 277483077 312955824 314668476 322238412 338623416 352075302 365421456 369977436 380951343 404234606 419557968 429651216 469433736 472002714 483357618 493303248 507935124 528112953 554966154 606351909 629336952 644476824 677246832 704150604 708004071 725036427 739954872 761902686 808469212 832449231 938867472 944005428 966715236 1015870248 1056225906 1109932308 1212703818 1258673904 1288953648 1408301208 1416008142 1450072854 1479909744 1523805372 1584338859 1616938424 1664898462 1819055727 1888010856 1933430472 2031740496 2112451812 2219864616 2425407636 2497347693 2816602416 2832016284 2900145708 3047610744 3168677718 3233876848 3329796924 3638111454 3776021712 3866860944 4224903624 4439729232 4753016577 4850815272 4994695386 5457167181 5664032568 5800291416 6095221488 6337355436 6659593848 7276222908 7492043079 8449807248 9506033154 9701630544 9989390772 10914334362 11328065136 11600582832 12674710872 13319187696 14259049731 14552445816 14984086158 16371501543 19012066308 19978781544 21828668724 22476129237 25349421744 28518099462 29104891632 29968172316 32743003086 38024132616 39957563088 42777149193 43657337448 44952258474 49114504629 57036198924 59936344632 65486006172 76048265232 85554298386 87314674896 89904516948 98229009258 114072397848 119872689264 130972012344 147343513887 171108596772 179809033896 196458018516 228144795696 261944024688 294687027774 342217193544 359618067792 392916037032 442030541661 589374055548 684434387088 785832074064 884061083322 1178748111096 1326091624983 1768122166644 2357496222192 2652183249966 3536244333288 5304366499932 7072488666576 10608732999864 21217465999728
• Sum of all divisors σ(n): 64780816454848
• Sum of proper divisors (its aliquot sum) s(n): 43563350455120
• 21217465999728 is an abundant number, because the sum of its proper divisors (43563350455120) is greater than itself. Its abundance is 22345884455392

Bases of 21217465999728

• Binary: 100110100110000010011100001100010000101110000₂
• Hexadecimal: 0x134C13862170
• Base-36: 7IR63FR00

Squares and roots of 21217465999728

• 21217465999728 squared (21217465999728²) is 450180863449613698496073984
• 21217465999728 cubed (21217465999728³) is 9551697163970372166116405963013611876352
• The square root of 21217465999728 is 4606242.0691631047
• The cube root of 21217465999728 is 27684.1485937157

Scales and comparisons

• 21,217,465,999,728 seconds is equal to 674,649 years, 41 weeks, 3 hours, 28 minutes, 48 seconds.
• To count from 1 to 21,217,465,999,728 would take you about one million, six hundred eighty-six thousand, six hundred twenty-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 21217465999728 cubic inches would be around 2307 feet tall.

Recreational maths with 21217465999728

• 21217465999728 backwards is 82799956471212
• 21217465999728 is a Harshad number.
• The number of decimal digits it has is: 14
• The sum of 21217465999728's digits is 72
• More coming soon!