19728438912

Names of 19728438912

• Cardinal: 19728438912 can be written as Nineteen billion, seven hundred twenty-eight million, four hundred thirty-eight thousand, nine hundred twelve.

Scientific notation

• Scientific notation: 1.9728438912 × 10¹⁰

Factors of 19728438912

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 945

Divisors of 19728438912

• Number of divisors d(n): 384
• Complete list of divisors:
  1 2 3 4 6 7 8 9 12 13 14 16 18 21 24 26 28 32 36 39 42 48 52 56 63 64 72 78 84 91 96 104 112 117 126 128 144 156 168 182 192 208 224 234 252 273 288 307 312 336 364 384 416 448 468 504 546 576 613 614 624 672 728 819 832 896 921 936 1008 1092 1152 1226 1228 1248 1344 1456 1638 1664 1839 1842 1872 2016 2149 2184 2452 2456 2496 2688 2763 2912 3276 3678 3684 3744 3991 4032 4291 4298 4368 4904 4912 4992 5517 5526 5824 6447 6552 7356 7368 7488 7969 7982 8064 8582 8596 8736 9808 9824 11034 11052 11648 11973 12873 12894 13104 14712 14736 14976 15938 15964 17164 17192 17472 19341 19616 19648 22068 22104 23907 23946 25746 25788 26208 27937 29424 29472 31876 31928 34328 34384 34944 35919 38619 38682 39232 39296 44136 44208 47814 47892 51492 51576 52416 55783 55874 58848 58944 63752 63856 68656 68768 71721 71838 77238 77364 78464 83811 88272 88416 95628 95784 102984 103152 104832 111566 111748 117696 117888 127504 127712 137312 137536 143442 143676 154476 154728 167349 167622 176544 176832 188191 191256 191568 205968 206304 223132 223496 235392 251433 255008 255424 274624 275072 286884 287352 308952 309456 334698 335244 353088 353664 376382 382512 383136 411936 412608 446264 446992 502047 502866 510016 510848 549248 564573 573768 574704 617904 618912 669396 670488 706176 752764 765024 766272 823872 825216 892528 893984 1004094 1005732 1020032 1129146 1147536 1149408 1235808 1237824 1317337 1338792 1340976 1505528 1530048 1532544 1647744 1693719 1785056 1787968 2008188 2011464 2258292 2295072 2298816 2446483 2471616 2475648 2634674 2677584 2681952 3011056 3060096 3387438 3570112 3575936 3952011 4016376 4022928 4516584 4590144 4597632 4892966 4943232 5269348 5355168 5363904 6022112 6774876 7140224 7339449 7904022 8032752 8045856 9033168 9180288 9785932 10538696 10710336 10727808 11856033 12044224 13549752 14678898 15808044 16065504 16091712 17125381 18066336 19571864 21077392 21420672 22018347 23712066 24088448 27099504 29357796 31616088 32131008 32183424 34250762 36132672 39143728 42154784 44036694 47424132 51376143 54199008 58715592 63232176 64262016 68501524 72265344 78287456 84309568 88073388 94848264 102752286 108398016 117431184 126464352 137003048 154128429 156574912 168619136 176146776 189696528 205504572 216796032 234862368 252928704 274006096 308256858 313149824 352293552 379393056 411009144 469724736 505857408 548012192 616513716 704587104 758786112 822018288 939449472 1096024384 1233027432 1409174208 1517572224 1644036576 2192048768 2466054864 2818348416 3288073152 4932109728 6576146304 9864219456 19728438912
• Sum of all divisors σ(n): 70213503360
• Sum of proper divisors (its aliquot sum) s(n): 50485064448
• 19728438912 is an abundant number, because the sum of its proper divisors (50485064448) is greater than itself. Its abundance is 30756625536

Bases of 19728438912

• Binary: 10010010111111010000001011010000000₂
• Hexadecimal: 0x497E81680
• Base-36: 929SWW0

Squares and roots of 19728438912

• 19728438912 squared (19728438912²) is 389211301904515743744
• 19728438912 cubed (19728438912³) is 7678531393483228107395750166528
• The square root of 19728438912 is 140457.9613692295
• The cube root of 19728438912 is 2702.0760855505

Scales and comparisons

• 19,728,438,912 seconds is equal to 627 years, 15 weeks, 5 days, 9 hours, 55 minutes, 12 seconds.
• To count from 1 to 19,728,438,912 would take you about one thousand, two hundred fifty-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 19728438912 cubic inches would be around 225.2 feet tall.

Recreational maths with 19728438912

• 19728438912 backwards is 21983482791
• The number of decimal digits it has is: 11
• The sum of 19728438912's digits is 54
• More coming soon!