21456134388

Names of 21456134388

• Cardinal: 21456134388 can be written as Twenty-one billion, four hundred fifty-six million, one hundred thirty-four thousand, three hundred eighty-eight.

Scientific notation

• Scientific notation: 2.1456134388 × 10¹⁰

Factors of 21456134388

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 116

Divisors of 21456134388

• Number of divisors d(n): 270
• Complete list of divisors:
  1 2 3 4 6 9 12 13 18 26 27 36 37 39 52 54 61 74 78 81 108 111 117 122 148 156 162 183 222 234 244 324 333 351 366 444 468 481 549 666 702 732 793 962 999 1053 1098 1332 1369 1404 1443 1586 1647 1924 1998 2106 2196 2257 2379 2738 2886 2997 3172 3294 3721 3996 4107 4212 4329 4514 4758 4941 5476 5772 5994 6588 6771 7137 7442 8214 8658 9028 9516 9882 11163 11988 12321 12987 13542 14274 14884 16428 17316 17797 19764 20313 21411 22326 24642 25974 27084 28548 29341 33489 35594 36963 38961 40626 42822 44652 48373 49284 51948 53391 58682 60939 64233 66978 71188 73926 77922 81252 83509 85644 88023 96746 100467 106782 110889 117364 121878 128466 133956 137677 145119 147852 155844 160173 167018 176046 182817 193492 200934 213564 221778 243756 250527 256932 264069 275354 290238 301401 320346 334036 352092 365634 401868 413031 435357 443556 480519 501054 528138 550708 580476 602802 640692 731268 751581 792207 826062 870714 961038 1002108 1056276 1085617 1205604 1239093 1306071 1441557 1503162 1584414 1652124 1741428 1789801 1922076 2171234 2254743 2376621 2478186 2612142 2883114 3006324 3168828 3256851 3579602 3717279 3918213 4342468 4509486 4753242 4956372 5094049 5224284 5369403 5766228 6513702 6764229 7159204 7434558 7836426 9018972 9506484 9770553 10188098 10738806 11151837 13027404 13528458 14869116 15282147 15672852 16108209 19541106 20376196 21477612 22303674 27056916 29311659 30564294 32216418 39082212 44607348 45846441 48324627 58623318 61128588 64432836 66222637 87934977 91692882 96649254 117246636 132445274 137539323 144973881 175869954 183385764 193298508 198667911 264890548 275078646 289947762 351739908 397335822 412617969 550157292 579895524 596003733 794671644 825235938 1192007466 1650471876 1788011199 2384014932 3576022398 5364033597 7152044796 10728067194 21456134388
• Sum of all divisors σ(n): 63116351298
• Sum of proper divisors (its aliquot sum) s(n): 41660216910
• 21456134388 is an abundant number, because the sum of its proper divisors (41660216910) is greater than itself. Its abundance is 20204082522

Bases of 21456134388

• Binary: 10011111110111000101010000011110100₂
• Hexadecimal: 0x4FEE2A0F4
• Base-36: 9UUFF90

Squares and roots of 21456134388

• 21456134388 squared (21456134388²) is 460365702875916134544
• 21456134388 cubed (21456134388³) is 9877668388531734671393553099072
• The square root of 21456134388 is 146479.1261170001
• The cube root of 21456134388 is 2778.7565125211

Scales and comparisons

• 21,456,134,388 seconds is equal to 682 years, 12 weeks, 2 days, 21 hours, 19 minutes, 48 seconds.
• To count from 1 to 21,456,134,388 would take you about one thousand, three hundred sixty-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 21456134388 cubic inches would be around 231.6 feet tall.

Recreational maths with 21456134388

• 21456134388 backwards is 88343165412
• The number of decimal digits it has is: 11
• The sum of 21456134388's digits is 45
• More coming soon!