21242651625

Names of 21242651625

• Cardinal: 21242651625 can be written as Twenty-one billion, two hundred forty-two million, six hundred fifty-one thousand, six hundred twenty-five.

Scientific notation

• Scientific notation: 2.1242651625 × 10¹⁰

Factors of 21242651625

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 2025

Divisors of 21242651625

• Number of divisors d(n): 128
• Complete list of divisors:
  1 3 5 9 13 15 25 27 39 45 65 75 117 125 135 195 225 281 325 351 375 585 675 843 975 1125 1405 1625 1723 1755 2529 2925 3375 3653 4215 4875 5169 7025 7587 8615 8775 10959 12645 14625 15507 18265 21075 22399 25845 32877 35125 37935 43075 43875 46521 54795 63225 67197 77535 91325 98631 105375 111995 129225 164385 189675 201591 215375 232605 273975 316125 335985 387675 456625 484163 493155 559975 604773 646125 821925 948375 1007955 1163025 1369875 1452489 1679925 1938375 2420815 2465775 2799875 3023865 4109625 4357467 5039775 5815125 6294119 7262445 8399625 12104075 12328875 13072401 15119325 18882357 21787335 25198875 31470595 36312225 56647071 60520375 65362005 75596625 94411785 108936675 157352975 169941213 181561125 283235355 326810025 472058925 544683375 786764875 849706065 1416176775 1634050125 2360294625 4248530325 7080883875 21242651625
• Sum of all divisors σ(n): 42471636480
• Sum of proper divisors (its aliquot sum) s(n): 21228984855
• 21242651625 is a deficient number, because the sum of its proper divisors (21228984855) is less than itself. Its deficiency is 13666770

Bases of 21242651625

• Binary: 10011110010001010010010001111101001₂
• Hexadecimal: 0x4F22923E9
• Base-36: 9RBBQW9

Squares and roots of 21242651625

• 21242651625 squared (21242651625²) is 451250248061115140625
• 21242651625 cubed (21242651625³) is 9585751815257100641309759765625
• The square root of 21242651625 is 145748.5904734587
• The cube root of 21242651625 is 2769.5098171659

Scales and comparisons

• 21,242,651,625 seconds is equal to 675 years, 23 weeks, 3 days, 33 minutes, 45 seconds.
• To count from 1 to 21,242,651,625 would take you about one thousand, three hundred fifty 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 21242651625 cubic inches would be around 230.8 feet tall.

Recreational maths with 21242651625

• 21242651625 backwards is 52615624212
• The number of decimal digits it has is: 11
• The sum of 21242651625's digits is 36
• More coming soon!