21142732065

Names of 21142732065

• Cardinal: 21142732065 can be written as Twenty-one billion, one hundred forty-two million, seven hundred thirty-two thousand and sixty-five.

Scientific notation

• Scientific notation: 2.1142732065 × 10¹⁰

Factors of 21142732065

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 8311

Divisors of 21142732065

• Number of divisors d(n): 128
• Complete list of divisors:
  1 3 5 7 13 15 21 31 35 39 61 65 91 93 105 155 183 195 217 273 305 403 427 455 465 651 793 915 1085 1209 1281 1365 1891 2015 2135 2379 2821 3255 3965 5551 5673 6045 6405 8191 8463 9455 11895 13237 14105 16653 24573 24583 27755 28365 39711 40955 42315 57337 66185 73749 83265 106483 122865 122915 172011 172081 198555 253921 286685 319449 368745 499651 516243 532415 745381 761763 860055 860405 1269605 1498953 1597245 1777447 2236143 2498255 2581215 3300973 3497557 3726905 3808815 5332341 6495463 7494765 8887235 9902919 10492671 11180715 15489181 16504865 17487785 19486389 23106811 26661705 32477315 45468241 46467543 49514595 52463355 69320433 77445905 97431945 108424267 115534055 136404723 201359353 227341205 232337715 325272801 346602165 542121335 604078059 682023615 1006796765 1409515471 1626364005 3020390295 4228546413 7047577355 21142732065
• Sum of all divisors σ(n): 43687870464
• Sum of proper divisors (its aliquot sum) s(n): 22545138399
• 21142732065 is an abundant number, because the sum of its proper divisors (22545138399) is greater than itself. Its abundance is 1402406334

Bases of 21142732065

• Binary: 10011101100001101000111110100100001₂
• Hexadecimal: 0x4EC347D21
• Base-36: 9PNU4GX

Squares and roots of 21142732065

• 21142732065 squared (21142732065²) is 447015119172379164225
• 21142732065 cubed (21142732065³) is 9451120893665657217797808374625
• The square root of 21142732065 is 145405.4059001933
• The cube root of 21142732065 is 2765.1606547839

Scales and comparisons

• 21,142,732,065 seconds is equal to 672 years, 14 weeks, 1 day, 13 hours, 7 minutes, 45 seconds.
• To count from 1 to 21,142,732,065 would take you about one thousand, three hundred forty-four 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 21142732065 cubic inches would be around 230.4 feet tall.

Recreational maths with 21142732065

• 21142732065 backwards is 56023724112
• The number of decimal digits it has is: 11
• The sum of 21142732065's digits is 33
• More coming soon!