18421356672

Names of 18421356672

• Cardinal: 18421356672 can be written as Eighteen billion, four hundred twenty-one million, three hundred fifty-six thousand, six hundred seventy-two.

Scientific notation

• Scientific notation: 1.8421356672 × 10¹⁰

Factors of 18421356672

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 1669

Divisors of 18421356672

• Number of divisors d(n): 384
• Complete list of divisors:
  1 2 3 4 6 8 9 12 16 17 18 19 24 31 32 34 36 38 48 51 57 62 64 68 72 76 93 96 102 114 124 128 136 144 152 153 171 186 192 204 228 248 272 279 288 304 306 323 342 372 384 408 456 496 527 544 558 576 589 608 612 646 684 744 816 912 969 992 1054 1088 1116 1152 1178 1216 1224 1292 1368 1488 1581 1597 1632 1767 1824 1938 1984 2108 2176 2232 2356 2432 2448 2584 2736 2907 2976 3162 3194 3264 3534 3648 3876 3968 4216 4464 4712 4743 4791 4896 5168 5301 5472 5814 5952 6324 6388 6528 7068 7296 7752 8432 8928 9424 9486 9582 9792 10013 10336 10602 10944 11628 11904 12648 12776 14136 14373 15504 16864 17856 18848 18972 19164 19584 20026 20672 21204 21888 23256 25296 25552 27149 28272 28746 30039 30343 31008 33728 35712 37696 37944 38328 40052 41344 42408 46512 49507 50592 51104 54298 56544 57492 60078 60686 62016 67456 75392 75888 76656 80104 81447 84816 90117 91029 93024 99014 101184 102208 108596 113088 114984 120156 121372 124032 148521 151776 153312 160208 162894 169632 180234 182058 186048 198028 202368 204416 217192 226176 229968 240312 242744 244341 273087 297042 303552 306624 320416 325788 339264 360468 364116 372096 396056 434384 445563 459936 480624 485488 488682 515831 546174 594084 607104 613248 640832 651576 678528 720936 728232 792112 841619 868768 891126 919872 940633 961248 970976 977364 1031662 1092348 1188168 1281664 1303152 1441872 1456464 1547493 1584224 1683238 1737536 1782252 1839744 1881266 1922496 1941952 1954728 2063324 2184696 2376336 2524857 2606304 2821899 2883744 2912928 3094986 3168448 3366476 3475072 3564504 3762532 3844992 3883904 3909456 4126648 4369392 4642479 4752672 5049714 5212608 5643798 5767488 5825856 6189972 6336896 6732952 7129008 7525064 7574571 7818912 8253296 8465697 8738784 9284958 9505344 10099428 10425216 11287596 11534976 11651712 12379944 13465904 14258016 15050128 15149142 15637824 15990761 16506592 16931394 17477568 18569916 19010688 20198856 22575192 24759888 26931808 28516032 30100256 30298284 31275648 31981522 33013184 33862788 34955136 37139832 40397712 45150384 47972283 49519776 53863616 57032064 60200512 60596568 63963044 66026368 67725576 74279664 80795424 90300768 95944566 99039552 107727232 120401024 121193136 127926088 135451152 143916849 148559328 161590848 180601536 191889132 198079104 242386272 255852176 270902304 287833698 297118656 323181696 361203072 383778264 484772544 511704352 541804608 575667396 594237312 767556528 969545088 1023408704 1083609216 1151334792 1535113056 2046817408 2302669584 3070226112 4605339168 6140452224 9210678336 18421356672
• Sum of all divisors σ(n): 61025702400
• Sum of proper divisors (its aliquot sum) s(n): 42604345728
• 18421356672 is an abundant number, because the sum of its proper divisors (42604345728) is greater than itself. Its abundance is 24182989056

Bases of 18421356672

• Binary: 10001001001111111111001100010000000₂
• Hexadecimal: 0x449FF9880
• Base-36: 8GNLLS0

Squares and roots of 18421356672

• 18421356672 squared (18421356672²) is 339346381637038915584
• 18421356672 cubed (18421356672³) is 6251220731488525109916963176448
• The square root of 18421356672 is 135725.2985703107
• The cube root of 18421356672 is 2641.0332594557

Scales and comparisons

• 18,421,356,672 seconds is equal to 585 years, 38 weeks, 4 days, 3 hours, 31 minutes, 12 seconds.
• To count from 1 to 18,421,356,672 would take you about one thousand, one hundred seventy-one 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 18421356672 cubic inches would be around 220.1 feet tall.

Recreational maths with 18421356672

• 18421356672 backwards is 27665312481
• The number of decimal digits it has is: 11
• The sum of 18421356672's digits is 45
• More coming soon!