21355568472

Names of 21355568472

• Cardinal: 21355568472 can be written as Twenty-one billion, three hundred fifty-five million, five hundred sixty-eight thousand, four hundred seventy-two.

Scientific notation

• Scientific notation: 2.1355568472 × 10¹⁰

Factors of 21355568472

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 9595

Divisors of 21355568472

• Number of divisors d(n): 192
• Complete list of divisors:
  1 2 3 4 6 7 8 12 14 19 21 24 28 38 42 49 56 57 76 84 98 101 114 133 147 152 168 196 202 228 266 294 303 392 399 404 456 532 588 606 707 798 808 931 1064 1176 1212 1414 1596 1862 1919 2121 2424 2793 2828 3192 3724 3838 4242 4949 5586 5656 5757 7448 7676 8484 9463 9898 11172 11514 13433 14847 15352 16968 18926 19796 22344 23028 26866 28389 29694 37852 39592 40299 46056 53732 56778 59388 66241 75704 80598 94031 107464 113556 118776 132482 161196 179797 188062 198723 227112 264964 282093 322392 359594 376124 397446 463687 529928 539391 564186 719188 752248 794892 927374 955763 1078782 1128372 1258579 1391061 1438376 1589784 1854748 1911526 2157564 2256744 2517158 2782122 2867289 3709496 3775737 3823052 4315128 5034316 5564244 5734578 6690341 7551474 7646104 8810053 10068632 11128488 11469156 13380682 15102948 17620106 18159497 20071023 22938312 26430159 26761364 30205896 35240212 36318994 40142046 46832387 52860318 53522728 54478491 70480424 72637988 80284092 93664774 105720636 108956982 127116479 140497161 145275976 160568184 187329548 211441272 217913964 254232958 280994322 374659096 381349437 435827928 508465916 561988644 762698874 889815353 1016931832 1123977288 1525397748 1779630706 2669446059 3050795496 3559261412 5338892118 7118522824 10677784236 21355568472
• Sum of all divisors σ(n): 66028435200
• Sum of proper divisors (its aliquot sum) s(n): 44672866728
• 21355568472 is an abundant number, because the sum of its proper divisors (44672866728) is greater than itself. Its abundance is 23317298256

Bases of 21355568472

• Binary: 10011111000111001000001110101011000₂
• Hexadecimal: 0x4F8E41D58
• Base-36: 9T6JY3C

Squares and roots of 21355568472

• 21355568472 squared (21355568472²) is 456060304762280414784
• 21355568472 cubed (21355568472³) is 9739427065712067080784273090048
• The square root of 21355568472 is 146135.4456386265
• The cube root of 21355568472 is 2774.4083243369

Scales and comparisons

• 21,355,568,472 seconds is equal to 679 years, 2 weeks, 22 hours, 21 minutes, 12 seconds.
• To count from 1 to 21,355,568,472 would take you about one thousand, three hundred fifty-eight 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 21355568472 cubic inches would be around 231.2 feet tall.

Recreational maths with 21355568472

• 21355568472 backwards is 27486555312
• The number of decimal digits it has is: 11
• The sum of 21355568472's digits is 48
• More coming soon!