20421006408

Names of 20421006408

• Cardinal: 20421006408 can be written as Twenty billion, four hundred twenty-one million, six thousand, four hundred eight.

Scientific notation

• Scientific notation: 2.0421006408 × 10¹⁰

Factors of 20421006408

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 29766

Divisors of 20421006408

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 3 4 6 8 9 11 12 18 22 24 33 36 44 66 72 79 88 99 121 132 158 198 237 242 264 316 363 396 474 484 632 711 726 792 869 948 968 1089 1422 1452 1738 1896 2178 2607 2844 2904 3476 4356 5214 5688 6952 7821 8712 9559 10428 15642 19118 20856 28677 29671 31284 38236 57354 59342 62568 76472 86031 89013 114708 118684 172062 178026 229416 237368 267039 326381 344124 356052 534078 652762 688248 712104 979143 1068156 1305524 1958286 2136312 2344009 2611048 2937429 3590191 3916572 4688018 5874858 7032027 7180382 7833144 9376036 10770573 11749716 14064054 14360764 18752072 21096081 21541146 23499432 25784099 28128108 28721528 32311719 42192162 43082292 51568198 56256216 64623438 77352297 84384324 86164584 103136396 129246876 154704594 168768648 206272792 232056891 258493752 283625089 309409188 464113782 567250178 618818376 850875267 928227564 1134500356 1701750534 1856455128 2269000712 2552625801 3403501068 5105251602 6807002136 10210503204 20421006408
• Sum of all divisors σ(n): 61563465600
• Sum of proper divisors (its aliquot sum) s(n): 41142459192
• 20421006408 is an abundant number, because the sum of its proper divisors (41142459192) is greater than itself. Its abundance is 20721452784

Bases of 20421006408

• Binary: 10011000001001011111101010001001000₂
• Hexadecimal: 0x4C12FD448
• Base-36: 9DQ51E0

Squares and roots of 20421006408

• 20421006408 squared (20421006408²) is 417017502715577062464
• 20421006408 cubed (20421006408³) is 8515917095202956593995160269312
• The square root of 20421006408 is 142902.0867867227
• The cube root of 20421006408 is 2733.3319667783

Scales and comparisons

• 20,421,006,408 seconds is equal to 649 years, 16 weeks, 6 days, 5 hours, 46 minutes, 48 seconds.
• To count from 1 to 20,421,006,408 would take you about one thousand, two hundred ninety-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 20421006408 cubic inches would be around 227.8 feet tall.

Recreational maths with 20421006408

• 20421006408 backwards is 80460012402
• The number of decimal digits it has is: 11
• The sum of 20421006408's digits is 27
• More coming soon!