21395744370

Names of 21395744370

• Cardinal: 21395744370 can be written as Twenty-one billion, three hundred ninety-five million, seven hundred forty-four thousand, three hundred seventy.

Scientific notation

• Scientific notation: 2.139574437 × 10¹⁰

Factors of 21395744370

• Number of distinct prime factors ω(n): 8
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 4575

Divisors of 21395744370

• Number of divisors d(n): 384
• Complete list of divisors:
  1 2 3 5 6 7 9 10 11 13 14 15 18 21 22 26 30 33 35 39 42 45 53 55 63 65 66 70 77 78 90 91 99 105 106 110 117 126 130 143 154 159 165 182 195 198 210 231 234 265 273 286 315 318 330 371 385 390 429 455 462 477 495 530 546 583 585 630 689 693 715 742 770 795 819 858 910 954 990 1001 1113 1155 1166 1170 1287 1365 1378 1386 1430 1590 1638 1749 1855 2002 2067 2145 2226 2310 2385 2574 2730 2915 3003 3339 3445 3465 3498 3710 4081 4095 4134 4290 4481 4770 4823 5005 5247 5565 5830 6006 6201 6435 6678 6890 6930 7579 8162 8190 8745 8962 9009 9646 10010 10335 10494 11130 12243 12402 12870 13443 14469 15015 15158 16695 17490 18018 20405 20670 22405 22737 24115 24486 26235 26886 28938 30030 31005 31367 33390 36729 37895 40329 40810 43407 44810 45045 45474 48230 49291 52470 53053 58253 61215 62010 62734 67215 68211 72345 73458 75790 80658 86814 90090 94101 98582 106106 113685 116506 122430 134430 136422 144690 147873 156835 159159 174759 183645 188202 201645 217035 227370 237493 246455 265265 282303 291265 295746 313670 318318 341055 345037 349518 367290 403290 407771 434070 443619 470505 474986 477477 492910 524277 530530 564606 582530 640783 682110 690074 712479 739365 795795 815542 873795 887238 941010 954954 1035111 1048554 1187465 1223313 1281566 1411515 1424958 1478730 1591590 1662451 1725185 1747590 1922349 2038855 2070222 2137437 2218095 2374930 2387385 2446626 2612423 2621385 2823030 3087409 3105333 3203915 3324902 3450370 3562395 3669939 3844698 4077710 4274874 4436190 4485481 4774770 4987353 5175555 5224846 5242770 5767047 6116565 6174818 6210666 6407830 7124790 7339878 7837269 8312255 8970962 9262227 9611745 9974706 10351110 10687185 11534094 12233130 13062115 13456443 14962059 15437045 15526665 15674538 16624510 18286961 18349695 18524454 19223490 21374370 21611863 22427405 23511807 24936765 26124230 26912886 27786681 28835235 29924118 30874090 31053330 33961499 36573922 36699390 39186345 40369329 43223726 44854810 46311135 47023614 49873530 54860883 55573362 57670470 64835589 67282215 67922998 74810295 78372690 80738658 91434805 92622270 101884497 108059315 109721766 117559035 129671178 134564430 138933405 149620590 164582649 169807495 182869610 194506767 201846645 203768994 216118630 235118070 237730493 274304415 277866810 305653491 324177945 329165298 339614990 389013534 403693290 475460986 509422485 548608830 611306982 648355890 713191479 822913245 972533835 1018844970 1188652465 1426382958 1528267455 1645826490 1945067670 2139574437 2377304930 3056534910 3565957395 4279148874 7131914790 10697872185 21395744370
• Sum of all divisors σ(n): 76116837888
• Sum of proper divisors (its aliquot sum) s(n): 54721093518
• 21395744370 is an abundant number, because the sum of its proper divisors (54721093518) is greater than itself. Its abundance is 33325349148

Bases of 21395744370

• Binary: 10011111011010010010010011001110010₂
• Hexadecimal: 0x4FB492672
• Base-36: 9TUH20I

Squares and roots of 21395744370

• 21395744370 squared (21395744370²) is 457777877146386696900
• 21395744370 cubed (21395744370³) is 9794498437665354836041071453000
• The square root of 21395744370 is 146272.8422161817
• The cube root of 21395744370 is 2776.1470514867

Scales and comparisons

• 21,395,744,370 seconds is equal to 680 years, 16 weeks, 3 days, 22 hours, 19 minutes, 30 seconds.
• To count from 1 to 21,395,744,370 would take you about one thousand, three hundred sixty 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 21395744370 cubic inches would be around 231.3 feet tall.

Recreational maths with 21395744370

• 21395744370 backwards is 07344759312
• 21395744370 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21395744370's digits is 45
• More coming soon!