21305390788168

Names of 21305390788168

• Cardinal: 21305390788168 can be written as Twenty-one trillion, three hundred five billion, three hundred ninety million, seven hundred eighty-eight thousand, one hundred sixty-eight.

Scientific notation

• Scientific notation: 2.1305390788168 × 10¹³

Factors of 21305390788168

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 2328

Divisors of 21305390788168

• Number of divisors d(n): 256
• Complete list of divisors:
  1 2 4 8 19 23 38 43 46 76 86 92 127 152 172 184 254 344 437 508 817 874 989 1016 1021 1093 1634 1748 1978 2042 2186 2413 2921 3268 3496 3956 4084 4372 4826 5461 5842 6536 7912 8168 8744 9652 10922 11684 18791 19304 19399 20767 21844 23368 23483 25139 37582 38798 41534 43688 43903 46966 46999 50278 55499 75164 77596 83068 87806 93932 93998 100556 103759 110998 125603 129667 138811 150328 155192 166136 175612 187864 187996 201112 207518 221996 251206 259334 277622 351224 375992 415036 443992 446177 477641 502412 518668 555244 830072 834157 892354 892981 955282 1004824 1009769 1037336 1080977 1110488 1115953 1668314 1784708 1785962 1910564 2019538 2161954 2231906 2386457 2463673 2637409 2982341 3192653 3336628 3569416 3571924 3821128 4039076 4323908 4463812 4772914 4927346 5274818 5575681 5964682 5968873 6385306 6673256 7143848 8078152 8647816 8927624 9545828 9854692 10549636 11151362 11929364 11937746 12770612 19091656 19185611 19709384 20538563 21099272 21203107 22302724 23858728 23875492 25541224 25666919 38371222 41077126 42406214 44605448 47750984 47985979 51333838 56664479 60660407 76742444 82154252 84812428 95971958 102667676 105937939 113328958 113408587 121320814 128240663 137284079 141726031 153484888 164308504 169624856 191943916 205335352 211875878 226657916 226817174 242641628 256481326 274568158 283452062 383887832 423751756 453315832 453634348 485283256 487671461 512962652 549136316 566904124 847503512 907268696 911733601 975342922 1025925304 1098272632 1103677517 1133808248 1823467202 1950685844 2207355034 2436572597 2608397501 2692794589 3259698713 3646934404 3901371688 4414710068 4873145194 5216795002 5385589178 6094219333 6519397426 7293868808 8829420136 9746290388 10433590004 10771178356 12188438666 13038794852 19492580776 20867180008 20969872823 21542356712 24376877332 26077589704 41939745646 48753754664 61934275547 83879491292 115790167327 123868551094 140167044659 167758982584 231580334654 247737102188 280334089318 463160669308 495474204376 560668178636 926321338616 1121336357272 2663173848521 5326347697042 10652695394084 21305390788168
• Sum of all divisors σ(n): 45338104627200
• Sum of proper divisors (its aliquot sum) s(n): 24032713839032
• 21305390788168 is an abundant number, because the sum of its proper divisors (24032713839032) is greater than itself. Its abundance is 2727323050864

Bases of 21305390788168

• Binary: 100110110000010001100001111111110111001001000₂
• Hexadecimal: 0x13608C3FEE48
• Base-36: 7JVK7L3YG

Squares and roots of 21305390788168

• 21305390788168 squared (21305390788168²) is 453919676636553872248796224
• 21305390788168 cubed (21305390788168³) is 9670936097180632199550172965436582277632
• The square root of 21305390788168 is 4615776.2931242671
• The cube root of 21305390788168 is 27722.3367591885

Scales and comparisons

• 21,305,390,788,168 seconds is equal to 677,445 years, 27 weeks, 2 days, 3 hours, 49 minutes, 28 seconds.
• To count from 1 to 21,305,390,788,168 would take you about one million, six hundred ninety-three thousand, six hundred thirteen 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 21305390788168 cubic inches would be around 2310.2 feet tall.

Recreational maths with 21305390788168

• 21305390788168 backwards is 86188709350312
• The number of decimal digits it has is: 14
• The sum of 21305390788168's digits is 61
• More coming soon!