21420900435

Names of 21420900435

• Cardinal: 21420900435 can be written as Twenty-one billion, four hundred twenty million, nine hundred thousand, four hundred thirty-five.

Scientific notation

• Scientific notation: 2.1420900435 × 10¹⁰

Factors of 21420900435

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 289

Divisors of 21420900435

• Number of divisors d(n): 96
• Complete list of divisors:
  1 3 5 11 15 33 37 55 111 121 165 185 233 363 407 555 605 699 1165 1221 1369 1815 2035 2563 3495 4107 4477 6105 6845 7689 8621 12815 13431 15059 20535 22385 25863 28193 38445 43105 45177 50653 67155 75295 84579 94831 129315 140965 151959 165649 225885 253265 284493 318977 422895 474155 496947 557183 759795 828245 956931 1043141 1422465 1594885 1671549 2484735 2785915 3129423 3508747 4784655 5215705 6129013 8357745 10526241 11802149 15647115 17543735 18387039 30645065 35406447 38596217 52631205 59010745 91935195 115788651 129823639 177032235 192981085 389470917 578943255 649118195 1428060029 1947354585 4284180087 7140300145 21420900435
• Sum of all divisors σ(n): 38885071680
• Sum of proper divisors (its aliquot sum) s(n): 17464171245
• 21420900435 is a deficient number, because the sum of its proper divisors (17464171245) is less than itself. Its deficiency is 3956729190

Bases of 21420900435

• Binary: 10011111100110010010000000001010011₂
• Hexadecimal: 0x4FCC90053
• Base-36: 9U9G8K3

Squares and roots of 21420900435

• 21420900435 squared (21420900435²) is 458854975446183189225
• 21420900435 cubed (21420900435³) is 9829086743137059797159489812875
• The square root of 21420900435 is 146358.8071658143
• The cube root of 21420900435 is 2777.2346444531

Scales and comparisons

• 21,420,900,435 seconds is equal to 681 years, 6 weeks, 1 day, 2 hours, 7 minutes, 15 seconds.
• To count from 1 to 21,420,900,435 would take you about one thousand, three hundred sixty-two 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 21420900435 cubic inches would be around 231.4 feet tall.

Recreational maths with 21420900435

• 21420900435 backwards is 53400902412
• The number of decimal digits it has is: 11
• The sum of 21420900435's digits is 30
• More coming soon!