21721466428725824

Names of 21721466428725824

• Cardinal: 21721466428725824 can be written as Twenty-one quadrillion, seven hundred twenty-one trillion, four hundred sixty-six billion, four hundred twenty-eight million, seven hundred twenty-five thousand, eight hundred twenty-four.

Scientific notation

• Scientific notation: 2.1721466428725824 × 10¹⁶

Factors of 21721466428725824

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 151491

Divisors of 21721466428725824

• Number of divisors d(n): 126
• Complete list of divisors:
  1 2 4 8 16 19 32 38 41 64 76 82 152 164 304 328 361 608 656 722 779 1216 1312 1444 1558 2624 2888 3116 5776 6232 11552 12464 14801 23104 24928 29602 49856 59204 118408 151429 236816 302858 473632 605716 947264 1211432 2422864 2877151 4845728 5754302 6208589 9691456 11508604 12417178 23017208 24834356 46034416 49668712 54665869 92068832 99337424 109331738 117963191 184137664 198674848 218663476 235926382 397349696 437326952 471852764 874653904 943705528 1749307808 1887411056 2241300629 3498615616 3774822112 4482601258 7549644224 8965202516 17930405032 22930742041 35860810064 45861484082 71721620128 91722968164 143443240256 183445936328 366891872656 435684098779 733783745312 871368197558 940160423681 1467567490624 1742736395116 1880320847362 3485472790232 3760641694724 6970945580464 7521283389448 8277997876801 13941891160928 15042566778896 16555995753602 17863048049939 27883782321856 30085133557792 33111991507204 35726096099878 60170267115584 66223983014408 71452192199756 132447966028816 142904384399512 264895932057632 285808768799024 339397912948841 529791864115264 571617537598048 678795825897682 1143235075196096 1357591651795364 2715183303590728 5430366607181456 10860733214362912 21721466428725824
• Sum of all divisors σ(n): 46601399980013634
• Sum of proper divisors (its aliquot sum) s(n): 24879933551287810
• 21721466428725824 is an abundant number, because the sum of its proper divisors (24879933551287810) is greater than itself. Its abundance is 3158467122561986

Bases of 21721466428725824

• Binary: 1001101001010111000111100000010011111000001101001000000₂
• Hexadecimal: 0x4D2B8F027C1A40
• Base-36: 5XVM7X40PQ8

Squares and roots of 21721466428725824

• 21721466428725824 squared (21721466428725824²) is 471822103814263002481800164478976
• 21721466428725824 cubed (21721466428725824³) is 10248667988332304362649786583248305418400516276224
• The square root of 21721466428725824 is 147382042.4228332643
• The cube root of 21721466428725824 is 279016.3889805471

Scales and comparisons

• 21,721,466,428,725,824 seconds is equal to 690,675,443 years, 27 weeks, 2 days, 14 hours, 3 minutes, 44 seconds.
• To count from 1 to 21,721,466,428,725,824 would take you about two billion, seventy-two million, twenty-six thousand, three hundred thirty 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 21721466428725824 cubic inches would be around 23251.4 feet tall.

Recreational maths with 21721466428725824

• 21721466428725824 backwards is 42852782466412712
• The number of decimal digits it has is: 17
• The sum of 21721466428725824's digits is 71
• More coming soon!