21204428138325

Names of 21204428138325

• Cardinal: 21204428138325 can be written as Twenty-one trillion, two hundred four billion, four hundred twenty-eight million, one hundred thirty-eight thousand, three hundred twenty-five.

Scientific notation

• Scientific notation: 2.1204428138325 × 10¹³

Factors of 21204428138325

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 45860

Divisors of 21204428138325

• Number of divisors d(n): 144
• Complete list of divisors:
  1 3 5 9 15 25 43 45 75 129 137 215 225 353 387 411 645 685 1059 1075 1233 1765 1935 2055 3177 3225 3425 5295 5891 6165 8825 9675 10275 15179 15885 17673 26475 29455 30825 45319 45537 48361 53019 75895 79425 88365 135957 136611 145083 147275 226595 227685 241805 265095 379475 407871 435249 441825 679785 683055 725415 1132975 1138425 1209025 1325475 1948717 2039355 2079523 2176245 3398925 3415275 3627075 5846151 6208703 6238569 9743585 10196775 10397615 10881225 15997607 17538453 18626109 18715707 29230755 31043515 31192845 47992821 48717925 51988075 55878327 79988035 87692265 93130545 93578535 143978463 146153775 155217575 155964225 239964105 266974229 279391635 399940175 438461325 465652725 467892675 687897101 719892315 800922687 1199820525 1334871145 1396958175 2063691303 2191672159 2402768061 3439485505 3599461575 4004613435 6191073909 6575016477 6674355725 10318456515 10958360795 12013840305 17197427525 19725049431 20023067175 30955369545 32875082385 51592282575 54791803975 60069201525 94241902837 98625247155 154776847725 164375411925 282725708511 471209514185 493126235775 848177125533 1413628542555 2356047570925 4240885627665 7068142712775 21204428138325
• Sum of all divisors σ(n): 39258162852480
• Sum of proper divisors (its aliquot sum) s(n): 18053734714155
• 21204428138325 is a deficient number, because the sum of its proper divisors (18053734714155) is less than itself. Its deficiency is 3150693424170

Bases of 21204428138325

• Binary: 100110100100100001010011010000010011101010101₂
• Hexadecimal: 0x13490A682755
• Base-36: 7IL6H14R9

Squares and roots of 21204428138325

• 21204428138325 squared (21204428138325²) is 449627772673389025333805625
• 21204428138325 cubed (21204428138325³) is 9534099794648006758727394270606163078125
• The square root of 21204428138325 is 4604826.6132749233
• The cube root of 21204428138325 is 27678.4769134577

Scales and comparisons

• 21,204,428,138,325 seconds is equal to 674,235 years, 11 weeks, 4 days, 23 hours, 18 minutes, 45 seconds.
• To count from 1 to 21,204,428,138,325 would take you about one million, six hundred eighty-five thousand, five hundred eighty-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 21204428138325 cubic inches would be around 2306.5 feet tall.

Recreational maths with 21204428138325

• 21204428138325 backwards is 52383182440212
• 21204428138325 is a Harshad number.
• The number of decimal digits it has is: 14
• The sum of 21204428138325's digits is 45
• More coming soon!