21289000689

Names of 21289000689

• Cardinal: 21289000689 can be written as Twenty-one billion, two hundred eighty-nine million, six hundred eighty-nine.

Scientific notation

• Scientific notation: 2.1289000689 × 10¹⁰

Factors of 21289000689

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 2259

Divisors of 21289000689

• Number of divisors d(n): 80
• Complete list of divisors:
  1 3 9 11 27 33 37 81 99 111 297 333 347 407 891 999 1041 1221 1861 2997 3123 3663 3817 5583 9369 10989 11451 12839 16749 20471 28107 32967 34353 38517 50247 61413 68857 103059 115551 141229 150741 184239 206571 309177 346653 423687 552717 619713 645767 757427 1039959 1271061 1658151 1859139 1937301 2272281 3813183 5577417 5811903 6816843 7103437 11439549 17435709 20450529 21310311 23893379 52307127 61351587 63930933 71680137 191792799 215040411 262827169 575378397 645121233 788481507 1935363699 2365444521 7096333563 21289000689
• Sum of all divisors σ(n): 35752723776
• Sum of proper divisors (its aliquot sum) s(n): 14463723087
• 21289000689 is a deficient number, because the sum of its proper divisors (14463723087) is less than itself. Its deficiency is 6825277602

Bases of 21289000689

• Binary: 10011110100111011000101111011110001₂
• Hexadecimal: 0x4F4EC5EF1
• Base-36: 9S2X629

Squares and roots of 21289000689

• 21289000689 squared (21289000689²) is 453221550336242474721
• 21289000689 cubed (21289000689³) is 9648633897377914226006434082769
• The square root of 21289000689 is 145907.5073085687
• The cube root of 21289000689 is 2771.5226064089

Scales and comparisons

• 21,289,000,689 seconds is equal to 676 years, 48 weeks, 11 hours, 18 minutes, 9 seconds.
• To count from 1 to 21,289,000,689 would take you about one thousand, three hundred fifty-three 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 21289000689 cubic inches would be around 231 feet tall.

Recreational maths with 21289000689

• 21289000689 backwards is 98600098212
• The number of decimal digits it has is: 11
• The sum of 21289000689's digits is 45
• More coming soon!