21164479712

Names of 21164479712

• Cardinal: 21164479712 can be written as Twenty-one billion, one hundred sixty-four million, four hundred seventy-nine thousand, seven hundred twelve.

Scientific notation

• Scientific notation: 2.1164479712 × 10¹⁰

Factors of 21164479712

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 182

Divisors of 21164479712

• Number of divisors d(n): 72
• Complete list of divisors:
  1 2 4 8 16 31 32 62 124 149 248 298 496 596 961 992 1192 1922 2384 3844 4619 4768 7688 9238 15376 18476 22201 29791 30752 36952 44402 59582 73904 88804 119164 143189 147808 177608 238328 286378 355216 476656 572756 688231 710432 953312 1145512 1376462 2291024 2752924 4438859 4582048 5505848 8877718 11011696 17755436 21335161 22023392 35510872 42670322 71021744 85340644 142043488 170681288 341362576 661389991 682725152 1322779982 2645559964 5291119928 10582239856 21164479712
• Sum of all divisors σ(n): 43347350592
• Sum of proper divisors (its aliquot sum) s(n): 22182870880
• 21164479712 is an abundant number, because the sum of its proper divisors (22182870880) is greater than itself. Its abundance is 1018391168

Bases of 21164479712

• Binary: 10011101101100000000101010011100000₂
• Hexadecimal: 0x4ED8054E0
• Base-36: 9Q0S928

Squares and roots of 21164479712

• 21164479712 squared (21164479712²) is 447935201479659602944
• 21164479712 cubed (21164479712³) is 9480315484006888047174263472128
• The square root of 21164479712 is 145480.1694802423
• The cube root of 21164479712 is 2766.1084214621

Scales and comparisons

• 21,164,479,712 seconds is equal to 672 years, 50 weeks, 1 day, 6 hours, 8 minutes, 32 seconds.
• To count from 1 to 21,164,479,712 would take you about one thousand, three hundred forty-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 21164479712 cubic inches would be around 230.5 feet tall.

Recreational maths with 21164479712

• 21164479712 backwards is 21797446112
• The number of decimal digits it has is: 11
• The sum of 21164479712's digits is 44
• More coming soon!