21428096768

Names of 21428096768

• Cardinal: 21428096768 can be written as Twenty-one billion, four hundred twenty-eight million, ninety-six thousand, seven hundred sixty-eight.

Scientific notation

• Scientific notation: 2.1428096768 × 10¹⁰

Factors of 21428096768

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 1275

Divisors of 21428096768

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 4 8 13 16 26 31 32 52 62 64 104 124 128 169 208 248 256 338 403 416 496 676 806 832 992 1229 1352 1612 1664 1984 2197 2458 2704 3224 3328 3968 4394 4916 5239 5408 6448 7936 8788 9832 10478 10816 12896 15977 17576 19664 20956 21632 25792 31954 35152 38099 39328 41912 43264 51584 63908 68107 70304 76198 78656 83824 103168 127816 136214 140608 152396 157312 167648 207701 255632 272428 281216 304792 314624 335296 415402 495287 511264 544856 562432 609584 670592 830804 990574 1022528 1089712 1219168 1341184 1661608 1981148 2045056 2179424 2438336 2700113 3323216 3962296 4090112 4358848 4876672 5400226 6438731 6646432 7924592 8717696 9753344 10800452 12877462 13292864 15849184 17435392 21600904 25754924 26585728 31698368 43201808 51509848 53171456 63396736 83703503 86403616 103019696 126793472 167407006 172807232 206039392 334814012 345614464 412078784 669628024 691228928 824157568 1339256048 1648315136 2678512096 5357024192 10714048384 21428096768
• Sum of all divisors σ(n): 47868844800
• Sum of proper divisors (its aliquot sum) s(n): 26440748032
• 21428096768 is an abundant number, because the sum of its proper divisors (26440748032) is greater than itself. Its abundance is 5012651264

Bases of 21428096768

• Binary: 10011111101001101101100111100000000₂
• Hexadecimal: 0x4FD36CF00
• Base-36: 9UDQHA8

Squares and roots of 21428096768

• 21428096768 squared (21428096768²) is 459163331098772045824
• 21428096768 cubed (21428096768³) is 9838996291101711163890002296832
• The square root of 21428096768 is 146383.3896587997
• The cube root of 21428096768 is 2777.5456128257

Scales and comparisons

• 21,428,096,768 seconds is equal to 681 years, 18 weeks, 9 hours, 6 minutes, 8 seconds.
• To count from 1 to 21,428,096,768 would take you about one thousand, three hundred sixty-two 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 21428096768 cubic inches would be around 231.5 feet tall.

Recreational maths with 21428096768

• 21428096768 backwards is 86769082412
• The number of decimal digits it has is: 11
• The sum of 21428096768's digits is 53
• More coming soon!