128721990802201412

Names of 128721990802201412

• Cardinal: 128721990802201412 can be written as One hundred twenty-eight quadrillion, seven hundred twenty-one trillion, nine hundred ninety billion, eight hundred two million, two hundred one thousand, four hundred twelve.

Scientific notation

• Scientific notation: 1.28721990802201412 × 10¹⁷

Factors of 128721990802201412

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 31118695

Divisors of 128721990802201412

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 4 7 11 14 22 28 44 61 77 122 154 244 308 427 671 854 1342 1708 2684 4697 9394 18788 221747 443494 886988 1552229 2439217 3104458 4878434 6208916 9756868 13526567 17074519 27053134 30896867 34149038 54106268 61793734 68298076 94685969 123587468 148792237 189371938 216278069 297584474 339865537 378743876 432556138 595168948 679731074 865112276 1041545659 1359462148 1884708887 2083091318 2379058759 3769417774 4166182636 4758117518 7538835548 9516235036 13192962209 20731797757 26385924418 41463595514 52771848836 82927191028 145122584299 290245168598 580490337196 6851287566649 13702575133298 27405150266596 47959012966543 75364163233139 95918025933086 150728326466278 191836051866172 301456652932556 417928541565589 527549142631973 835857083131178 1055098285263946 1671714166262356 2110196570527892 2925499790959123 4597213957221479 5850999581918246 9194427914442958 11701999163836492 18388855828885916 32180497700550353 64360995401100706 128721990802201412
• Sum of all divisors σ(n): 285453341702839296
• Sum of proper divisors (its aliquot sum) s(n): 156731350900637884
• 128721990802201412 is an abundant number, because the sum of its proper divisors (156731350900637884) is greater than itself. Its abundance is 28009360098436472

Bases of 128721990802201412

• Binary: 111001001010011111111011111111000100010111101101101000100₂
• Hexadecimal: 0x1C94FF7F88BDB44
• Base-36: Z7G4Y7WBEPW

Squares and roots of 128721990802201412

• 128721990802201412 squared (128721990802201412²) is 16569350916082024910426865414793744
• 128721990802201412 cubed (128721990802201412³) is 2132839836218357950504211756618031125712067125566528
• The square root of 128721990802201412 is 358778470.3716227899
• The cube root of 128721990802201412 is 504914.1974960593

Scales and comparisons

• 128,721,990,802,201,412 seconds is equal to 4,092,961,144 years, 12 weeks, 6 days, 23 hours, 3 minutes, 32 seconds.
• To count from 1 to 128,721,990,802,201,412 would take you about twelve billion, two hundred seventy-eight million, eight hundred eighty-three thousand, four hundred thirty-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 128721990802201412 cubic inches would be around 42076.2 feet tall.

Recreational maths with 128721990802201412

• 128721990802201412 backwards is 214102208099127821
• The number of decimal digits it has is: 18
• The sum of 128721990802201412's digits is 59
• More coming soon!