20513161872

Names of 20513161872

• Cardinal: 20513161872 can be written as Twenty billion, five hundred thirteen million, one hundred sixty-one thousand, eight hundred seventy-two.

Scientific notation

• Scientific notation: 2.0513161872 × 10¹⁰

Factors of 20513161872

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 1196

Divisors of 20513161872

• Number of divisors d(n): 280
• Complete list of divisors:
  1 2 3 4 6 7 8 9 12 14 16 18 21 24 27 28 36 42 48 54 56 63 72 81 84 108 112 126 144 162 168 189 216 243 252 277 324 336 378 432 486 504 554 567 648 729 756 831 907 972 1008 1108 1134 1296 1458 1512 1662 1701 1814 1939 1944 2216 2268 2493 2721 2916 3024 3324 3402 3628 3878 3888 4432 4536 4986 5103 5442 5817 5832 6349 6648 6804 7256 7479 7756 8163 9072 9972 10206 10884 11634 11664 12698 13296 13608 14512 14958 15512 16326 17451 19047 19944 20412 21768 22437 23268 24489 25396 27216 29916 31024 32652 34902 38094 39888 40824 43536 44874 46536 48978 50792 52353 57141 59832 65304 67311 69804 73467 76188 81648 89748 93072 97956 101584 104706 114282 119664 130608 134622 139608 146934 152376 157059 171423 179496 195912 201933 209412 220401 228564 251239 269244 279216 293868 304752 314118 342846 358992 391824 403866 418824 440802 457128 471177 502478 514269 538488 587736 628236 661203 685692 753717 807732 837648 881604 914256 942354 1004956 1028538 1076976 1175472 1256472 1322406 1371384 1413531 1507434 1542807 1615464 1758673 1763208 1884708 2009912 2057076 2261151 2512944 2644812 2742768 2827062 3014868 3085614 3230928 3517346 3526416 3769416 4019824 4114152 4522302 4628421 5276019 5289624 5654124 6029736 6171228 6783453 7034692 7538832 8228304 9044604 9256842 10552038 10579248 11308248 12059472 12342456 13566906 14069384 15828057 18089208 18513684 20350359 21104076 22616496 24684912 27133812 28138768 31656114 36178416 37027368 40700718 42208152 47484171 54267624 61051077 63312228 74054736 81401436 84416304 94968342 108535248 122102154 126624456 142452513 162802872 183153231 189936684 244204308 253248912 284905026 325605744 366306462 379873368 427357539 488408616 569810052 732612924 759746736 854715078 976817232 1139620104 1282072617 1465225848 1709430156 2279240208 2564145234 2930451696 3418860312 5128290468 6837720624 10256580936 20513161872
• Sum of all divisors σ(n): 68423059136
• Sum of proper divisors (its aliquot sum) s(n): 47909897264
• 20513161872 is an abundant number, because the sum of its proper divisors (47909897264) is greater than itself. Its abundance is 27396735392

Bases of 20513161872

• Binary: 10011000110101011100000001010010000₂
• Hexadecimal: 0x4C6AE0290
• Base-36: 9F90900

Squares and roots of 20513161872

• 20513161872 squared (20513161872²) is 420789809986874544384
• 20513161872 cubed (20513161872³) is 8631729486348879724305240526848
• The square root of 20513161872 is 143224.1665083097
• The cube root of 20513161872 is 2737.4374371891

Scales and comparisons

• 20,513,161,872 seconds is equal to 652 years, 13 weeks, 1 day, 20 hours, 31 minutes, 12 seconds.
• To count from 1 to 20,513,161,872 would take you about one thousand, three hundred 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 20513161872 cubic inches would be around 228.1 feet tall.

Recreational maths with 20513161872

• 20513161872 backwards is 27816131502
• 20513161872 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 20513161872's digits is 36
• More coming soon!