21386431024

Names of 21386431024

• Cardinal: 21386431024 can be written as Twenty-one billion, three hundred eighty-six million, four hundred thirty-one thousand and twenty-four.

Scientific notation

• Scientific notation: 2.1386431024 × 10¹⁰

Factors of 21386431024

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 591

Divisors of 21386431024

• Number of divisors d(n): 90
• Complete list of divisors:
  1 2 4 7 8 14 16 28 49 56 98 112 139 196 278 392 443 556 784 886 973 1112 1772 1946 2224 3101 3544 3892 6202 6811 7088 7784 12404 13622 15568 21707 24808 27244 43414 49616 54488 61577 86828 108976 123154 173656 196249 246308 347312 392498 431039 492616 784996 862078 985232 1373743 1569992 1724156 2747486 3017273 3139984 3448312 5494972 6034546 6896624 9616201 10989944 12069092 19232402 21979888 24138184 27278611 38464804 48276368 54557222 76929608 109114444 153859216 190950277 218228888 381900554 436457776 763801108 1336651939 1527602216 2673303878 3055204432 5346607756 10693215512 21386431024
• Sum of all divisors σ(n): 48657914340
• Sum of proper divisors (its aliquot sum) s(n): 27271483316
• 21386431024 is an abundant number, because the sum of its proper divisors (27271483316) is greater than itself. Its abundance is 5885052292

Bases of 21386431024

• Binary: 10011111010101110110000101000110000₂
• Hexadecimal: 0x4FABB0A30
• Base-36: 9TOXFSG

Squares and roots of 21386431024

• 21386431024 squared (21386431024²) is 457379431944309688576
• 21386431024 cubed (21386431024³) is 9781713673073281364025544781824
• The square root of 21386431024 is 146241.0032241299
• The cube root of 21386431024 is 2775.7441836701

Scales and comparisons

• 21,386,431,024 seconds is equal to 680 years, 1 week, 1 day, 3 hours, 17 minutes, 4 seconds.
• To count from 1 to 21,386,431,024 would take you about one thousand, three hundred sixty 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 21386431024 cubic inches would be around 231.3 feet tall.

Recreational maths with 21386431024

• 21386431024 backwards is 42013468312
• The number of decimal digits it has is: 11
• The sum of 21386431024's digits is 34
• More coming soon!