21317798788

Names of 21317798788

• Cardinal: 21317798788 can be written as Twenty-one billion, three hundred seventeen million, seven hundred ninety-eight thousand, seven hundred eighty-eight.

Scientific notation

• Scientific notation: 2.1317798788 × 10¹⁰

Factors of 21317798788

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 580

Divisors of 21317798788

• Number of divisors d(n): 192
• Complete list of divisors:
  1 2 4 11 13 17 22 26 34 37 44 52 68 74 143 148 187 193 221 286 307 374 386 407 442 481 572 614 629 748 772 814 884 962 1228 1258 1628 1924 2123 2431 2509 2516 3281 3377 3991 4246 4862 5018 5219 5291 6562 6754 6919 7141 7982 8177 8492 9724 10036 10438 10582 11359 13124 13508 13838 14282 15964 16354 20876 21164 22718 27599 27676 28564 32708 36091 42653 43901 45436 55198 57409 59251 67847 72182 78551 85306 87802 89947 92833 110396 114818 118502 121397 124949 135694 144364 147667 157102 170612 175604 179894 185666 193103 229636 237004 242794 249898 271388 295334 314204 359788 371332 386206 469183 485588 499796 590668 651761 746317 770263 772412 938366 1007267 1021163 1303522 1335367 1492634 1540526 1578161 1624337 1876732 2014534 2042326 2124133 2192287 2510339 2607044 2670734 2985268 3081052 3156322 3248674 4029068 4084652 4248266 4384574 5020678 5341468 6312644 6497348 8472893 8496532 8769148 10041356 11079937 13094471 16945786 17359771 22159874 24115157 26188942 27613729 28499731 33891572 34719542 37268879 44319748 48230314 52377884 55227458 56999462 69439084 74537758 96460628 110454916 113998924 144039181 149075516 288078362 313497041 409957669 484495427 576156724 626994082 819915338 968990854 1253988164 1639830676 1937981708 5329449697 10658899394 21317798788
• Sum of all divisors σ(n): 48063552768
• Sum of proper divisors (its aliquot sum) s(n): 26745753980
• 21317798788 is an abundant number, because the sum of its proper divisors (26745753980) is greater than itself. Its abundance is 5427955192

Bases of 21317798788

• Binary: 10011110110101000111100101110000100₂
• Hexadecimal: 0x4F6A3CB84
• Base-36: 9SK2ETG

Squares and roots of 21317798788

• 21317798788 squared (21317798788²) is 454448545165654268944
• 21317798788 cubed (21317798788³) is 9687842645340747833721429239872
• The square root of 21317798788 is 146006.1601029217
• The cube root of 21317798788 is 2772.7717431753

Scales and comparisons

• 21,317,798,788 seconds is equal to 677 years, 43 weeks, 4 days, 18 hours, 46 minutes, 28 seconds.
• To count from 1 to 21,317,798,788 would take you about one thousand, three hundred fifty-five 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 21317798788 cubic inches would be around 231.1 feet tall.

Recreational maths with 21317798788

• 21317798788 backwards is 88789771312
• The number of decimal digits it has is: 11
• The sum of 21317798788's digits is 61
• More coming soon!