21042028040

Names of 21042028040

• Cardinal: 21042028040 can be written as Twenty-one billion, forty-two million, twenty-eight thousand and forty.

Scientific notation

• Scientific notation: 2.104202804 × 10¹⁰

Factors of 21042028040

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 37671

Divisors of 21042028040

• Number of divisors d(n): 128
• Complete list of divisors:
  1 2 4 5 8 10 11 19 20 22 38 40 44 55 67 76 88 95 110 134 152 190 209 220 268 335 380 418 440 536 670 737 760 836 1045 1273 1340 1474 1672 2090 2546 2680 2948 3685 4180 5092 5896 6365 7370 8360 10184 12730 14003 14740 25460 28006 29480 37567 50920 56012 70015 75134 112024 140030 150268 187835 280060 300536 375670 413237 560120 713773 751340 826474 1427546 1502680 1652948 2066185 2516989 2855092 3305896 3568865 4132370 5033978 5710184 7137730 7851503 8264740 10067956 12584945 14275460 15703006 16529480 20135912 25169890 27686879 28550920 31406012 39257515 47822791 50339780 55373758 62812024 78515030 95645582 100679560 110747516 138434395 157030060 191291164 221495032 239113955 276868790 314060120 382582328 478227910 526050701 553737580 956455820 1052101402 1107475160 1912911640 2104202804 2630253505 4208405608 5260507010 10521014020 21042028040
• Sum of all divisors σ(n): 55179878400
• Sum of proper divisors (its aliquot sum) s(n): 34137850360
• 21042028040 is an abundant number, because the sum of its proper divisors (34137850360) is greater than itself. Its abundance is 13095822320

Bases of 21042028040

• Binary: 10011100110001100111101111000001000₂
• Hexadecimal: 0x4E633DE08
• Base-36: 9NZVOQW

Squares and roots of 21042028040

• 21042028040 squared (21042028040²) is 442766944036146241600
• 21042028040 cubed (21042028040³) is 9316714451593699989287814464000
• The square root of 21042028040 is 145058.7054953959
• The cube root of 21042028040 is 2760.7634606427

Scales and comparisons

• 21,042,028,040 seconds is equal to 669 years, 3 weeks, 4 days, 23 hours, 47 minutes, 20 seconds.
• To count from 1 to 21,042,028,040 would take you about one thousand, three hundred thirty-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 21042028040 cubic inches would be around 230.1 feet tall.

Recreational maths with 21042028040

• 21042028040 backwards is 04082024012
• The number of decimal digits it has is: 11
• The sum of 21042028040's digits is 23
• More coming soon!