21295621872

Names of 21295621872

• Cardinal: 21295621872 can be written as Twenty-one billion, two hundred ninety-five million, six hundred twenty-one thousand, eight hundred seventy-two.

Scientific notation

• Scientific notation: 2.1295621872 × 10¹⁰

Factors of 21295621872

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 111793

Divisors of 21295621872

• Number of divisors d(n): 180
• Complete list of divisors:
  1 2 3 4 6 7 8 9 12 14 16 18 21 24 27 28 36 42 48 49 54 56 63 72 81 84 98 108 112 126 144 147 162 168 189 196 216 243 252 294 324 336 378 392 432 441 486 504 567 588 648 756 784 882 972 1008 1134 1176 1296 1323 1512 1701 1764 1944 2268 2352 2646 3024 3402 3528 3888 3969 4536 5292 6804 7056 7938 9072 10584 11907 13608 15876 21168 23814 27216 31752 47628 63504 95256 111781 190512 223562 335343 447124 670686 782467 894248 1006029 1341372 1564934 1788496 2012058 2347401 2682744 3018087 3129868 4024116 4694802 5365488 5477269 6036174 6259736 7042203 8048232 9054261 9389604 10954538 12072348 12519472 14084406 16096464 16431807 18108522 18779208 21126609 21909076 24144696 27162783 28168812 32863614 36217044 37558416 42253218 43818152 48289392 49295421 54325566 56337624 63379827 65727228 72434088 84506436 87636304 98590842 108651132 112675248 126759654 131454456 144868176 147886263 169012872 190139481 197181684 217302264 253519308 262908912 295772526 338025744 380278962 394363368 434604528 443658789 507038616 591545052 760557924 788726736 887317578 1014077232 1183090104 1330976367 1521115848 1774635156 2366180208 2661952734 3042231696 3549270312 5323905468 7098540624 10647810936 21295621872
• Sum of all divisors σ(n): 71896841016
• Sum of proper divisors (its aliquot sum) s(n): 50601219144
• 21295621872 is an abundant number, because the sum of its proper divisors (50601219144) is greater than itself. Its abundance is 29305597272

Bases of 21295621872

• Binary: 10011110101010100010110011011110000₂
• Hexadecimal: 0x4F55166F0
• Base-36: 9S6V300

Squares and roots of 21295621872

• 21295621872 squared (21295621872²) is 453503510915204784384
• 21295621872 cubed (21295621872³) is 9657639286074625743686954446848
• The square root of 21295621872 is 145930.1952030489
• The cube root of 21295621872 is 2771.8099043195

Scales and comparisons

• 21,295,621,872 seconds is equal to 677 years, 7 weeks, 2 hours, 31 minutes, 12 seconds.
• To count from 1 to 21,295,621,872 would take you about one thousand, three hundred fifty-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 21295621872 cubic inches would be around 231 feet tall.

Recreational maths with 21295621872

• 21295621872 backwards is 27812659212
• The number of decimal digits it has is: 11
• The sum of 21295621872's digits is 45
• More coming soon!