21538018304

Names of 21538018304

• Cardinal: 21538018304 can be written as Twenty-one billion, five hundred thirty-eight million, eighteen thousand, three hundred four.

Scientific notation

• Scientific notation: 2.1538018304 × 10¹⁰

Factors of 21538018304

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 61725

Divisors of 21538018304

• Number of divisors d(n): 88
• Complete list of divisors:
  1 2 4 8 11 16 22 31 32 44 62 64 88 124 128 176 248 256 341 352 496 512 682 704 992 1024 1364 1408 1984 2728 2816 3968 5456 5632 7936 10912 11264 15872 21824 31744 43648 61681 87296 123362 174592 246724 349184 493448 678491 986896 1356982 1912111 1973792 2713964 3824222 3947584 5427928 7648444 7895168 10855856 15296888 15790336 21033221 21711712 30593776 31580672 42066442 43423424 61187552 63161344 84132884 86846848 122375104 168265768 173693696 244750208 336531536 347387392 489500416 673063072 694774784 979000832 1346126144 1958001664 2692252288 5384504576 10769009152 21538018304
• Sum of all divisors σ(n): 48485012736
• Sum of proper divisors (its aliquot sum) s(n): 26946994432
• 21538018304 is an abundant number, because the sum of its proper divisors (26946994432) is greater than itself. Its abundance is 5408976128

Bases of 21538018304

• Binary: 10100000011110001000001010000000000₂
• Hexadecimal: 0x503C41400
• Base-36: 9W76HA8

Squares and roots of 21538018304

• 21538018304 squared (21538018304²) is 463886232463439036416
• 21538018304 cubed (21538018304³) is 9991190165771148977115930558464
• The square root of 21538018304 is 146758.3670664129
• The cube root of 21538018304 is 2782.2869189765

Scales and comparisons

• 21,538,018,304 seconds is equal to 684 years, 43 weeks, 5 days, 14 hours, 51 minutes, 44 seconds.
• To count from 1 to 21,538,018,304 would take you about one thousand, three hundred sixty-nine 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 21538018304 cubic inches would be around 231.9 feet tall.

Recreational maths with 21538018304

• 21538018304 backwards is 40381083512
• The number of decimal digits it has is: 11
• The sum of 21538018304's digits is 35
• More coming soon!