21004638776

Names of 21004638776

• Cardinal: 21004638776 can be written as Twenty-one billion, four million, six hundred thirty-eight thousand, seven hundred seventy-six.

Scientific notation

• Scientific notation: 2.1004638776 × 10¹⁰

Factors of 21004638776

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 79

Divisors of 21004638776

• Number of divisors d(n): 128
• Complete list of divisors:
  1 2 4 8 11 19 22 38 44 47 76 88 94 121 152 188 209 242 376 418 484 517 836 893 968 1034 1331 1672 1786 2068 2209 2299 2662 3572 4136 4418 4598 5324 5687 7144 8836 9196 9823 10648 11374 17672 18392 19646 22748 24299 25289 39292 41971 45496 48598 50578 62557 78584 83942 97196 101156 103823 108053 125114 167884 194392 202312 207646 216106 250228 267289 335768 415292 432212 461681 500456 534578 830584 864424 923362 1069156 1142053 1188583 1846724 1972637 2138312 2284106 2377166 2940179 3693448 3945274 4568212 4754332 5078491 5880358 7890548 9136424 9508664 10156982 11760716 12562583 15781096 20313964 21699007 23521432 25125166 40627928 43398014 50250332 55863401 86796028 100500664 111726802 138188413 173592056 223453604 238689077 276376826 446907208 477378154 552753652 954756308 1105507304 1909512616 2625579847 5251159694 10502319388 21004638776
• Sum of all divisors σ(n): 46590336000
• Sum of proper divisors (its aliquot sum) s(n): 25585697224
• 21004638776 is an abundant number, because the sum of its proper divisors (25585697224) is greater than itself. Its abundance is 4581058448

Bases of 21004638776

• Binary: 10011100011111110010101101000111000₂
• Hexadecimal: 0x4E3F95A38
• Base-36: 9NDMB08

Squares and roots of 21004638776

• 21004638776 squared (21004638776²) is 441194850110242778176
• 21004638776 cubed (21004638776³) is 9267138456397113333249576152576
• The square root of 21004638776 is 144929.7718758985
• The cube root of 21004638776 is 2759.1273047785

Scales and comparisons

• 21,004,638,776 seconds is equal to 667 years, 45 weeks, 6 days, 5 hours, 52 minutes, 56 seconds.
• To count from 1 to 21,004,638,776 would take you about one thousand, three hundred thirty-five 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 21004638776 cubic inches would be around 229.9 feet tall.

Recreational maths with 21004638776

• 21004638776 backwards is 67783640012
• 21004638776 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21004638776's digits is 44
• More coming soon!