21379871430

Names of 21379871430

• Cardinal: 21379871430 can be written as Twenty-one billion, three hundred seventy-nine million, eight hundred seventy-one thousand, four hundred thirty.

Scientific notation

• Scientific notation: 2.137987143 × 10¹⁰

Factors of 21379871430

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 18
• Sum of prime factors: 159

Divisors of 21379871430

• Number of divisors d(n): 128
• Complete list of divisors:
  1 2 3 5 6 9 10 15 18 27 30 45 54 81 90 135 149 162 243 270 298 405 447 486 729 745 810 894 1215 1341 1458 1490 2187 2235 2430 2682 3645 4023 4374 4470 6561 6705 7290 8046 10935 12069 13122 13410 19683 20115 21870 24138 32805 36207 39366 40230 59049 60345 65610 72414 98415 108621 118098 120690 177147 181035 196830 217242 295245 325863 354294 362070 531441 543105 590490 651726 885735 977589 1062882 1086210 1594323 1629315 1771470 1955178 2657205 2932767 3188646 3258630 4782969 4887945 5314410 5865534 7971615 8798301 9565938 9775890 14348907 14663835 15943230 17596602 23914845 26394903 28697814 29327670 43991505 47829690 52789806 71744535 79184709 87983010 131974515 143489070 158369418 237554127 263949030 395923545 475108254 712662381 791847090 1187770635 1425324762 2137987143 2375541270 3563311905 4275974286 7126623810 10689935715 21379871430
• Sum of all divisors σ(n): 58113072000
• Sum of proper divisors (its aliquot sum) s(n): 36733200570
• 21379871430 is an abundant number, because the sum of its proper divisors (36733200570) is greater than itself. Its abundance is 15353329140

Bases of 21379871430

• Binary: 10011111010010101101111001011000110₂
• Hexadecimal: 0x4FA56F2C6
• Base-36: 9TL0UDI

Squares and roots of 21379871430

• 21379871430 squared (21379871430²) is 457098902363330244900
• 21379871430 cubed (21379871430³) is 9772715763322123782592413207000
• The square root of 21379871430 is 146218.5741621085
• The cube root of 21379871430 is 2775.4603648203

Scales and comparisons

• 21,379,871,430 seconds is equal to 679 years, 42 weeks, 2 days, 5 hours, 10 minutes, 30 seconds.
• To count from 1 to 21,379,871,430 would take you about one thousand, three hundred fifty-nine 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 21379871430 cubic inches would be around 231.3 feet tall.

Recreational maths with 21379871430

• 21379871430 backwards is 03417897312
• 21379871430 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21379871430's digits is 45
• More coming soon!