21427653208

Names of 21427653208

• Cardinal: 21427653208 can be written as Twenty-one billion, four hundred twenty-seven million, six hundred fifty-three thousand, two hundred eight.

Scientific notation

• Scientific notation: 2.1427653208 × 10¹⁰

Factors of 21427653208

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 152

Divisors of 21427653208

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 4 8 13 23 26 41 46 52 73 82 92 104 146 164 184 292 299 328 533 584 598 943 949 1066 1196 1679 1681 1886 1898 2132 2392 2993 3358 3362 3772 3796 4264 5329 5986 6716 6724 7544 7592 10658 11972 12259 13432 13448 21316 21827 21853 23944 24518 38663 38909 42632 43654 43706 49036 68839 69277 77326 77818 87308 87412 98072 122567 122713 137678 138554 154652 155636 174616 174824 218489 245134 245426 275356 277108 309304 311272 436978 490268 490852 502619 550712 554216 873956 894907 980536 981704 1005238 1593371 1595269 1747912 1789814 2010476 2822399 2840357 3186742 3190538 3579628 4020952 5025247 5644798 5680714 6373484 6381076 7159256 8958049 10050494 11289596 11361428 12746968 12762152 17916098 20100988 22579192 22722856 35832196 36691187 40201976 65328211 71664392 73382374 116454637 130656422 146764748 206035127 232909274 261312844 293529496 412070254 465818548 522625688 824140508 931637096 1648281016 2678456651 5356913302 10713826604 21427653208
• Sum of all divisors σ(n): 46919219760
• Sum of proper divisors (its aliquot sum) s(n): 25491566552
• 21427653208 is an abundant number, because the sum of its proper divisors (25491566552) is greater than itself. Its abundance is 4063913344

Bases of 21427653208

• Binary: 10011111101001100000000101001011000₂
• Hexadecimal: 0x4FD300A58
• Base-36: 9UDGZ14

Squares and roots of 21427653208

• 21427653208 squared (21427653208²) is 459144322002312691264
• 21427653208 cubed (21427653208³) is 9838385304287840522382163174912
• The square root of 21427653208 is 146381.8745883521
• The cube root of 21427653208 is 2777.5264476981

Scales and comparisons

• 21,427,653,208 seconds is equal to 681 years, 17 weeks, 2 days, 5 hours, 53 minutes, 28 seconds.
• To count from 1 to 21,427,653,208 would take you about one thousand, three hundred sixty-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 21427653208 cubic inches would be around 231.5 feet tall.

Recreational maths with 21427653208

• 21427653208 backwards is 80235672412
• The number of decimal digits it has is: 11
• The sum of 21427653208's digits is 40
• More coming soon!