21381833748

Names of 21381833748

• Cardinal: 21381833748 can be written as Twenty-one billion, three hundred eighty-one million, eight hundred thirty-three thousand, seven hundred forty-eight.

Scientific notation

• Scientific notation: 2.1381833748 × 10¹⁰

Factors of 21381833748

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 788

Divisors of 21381833748

• Number of divisors d(n): 192
• Complete list of divisors:
  1 2 3 4 6 11 12 22 29 33 44 58 66 71 87 116 132 142 151 174 213 284 302 319 348 426 453 521 604 638 781 852 906 957 1042 1276 1562 1563 1661 1812 1914 2059 2084 2343 3124 3126 3322 3828 4118 4379 4686 4983 5731 6177 6252 6644 8236 8758 9372 9966 10721 11462 12354 13137 15109 17193 17516 19932 21442 22649 22924 24708 26274 30218 32163 34386 36991 42884 45298 45327 48169 52548 60436 64326 67947 68772 73982 78671 90596 90654 96338 110973 117931 128652 135894 144507 147964 157342 166199 181308 192676 221946 235862 236013 271788 289014 310909 314684 332398 353793 406901 443892 471724 472026 498597 578028 621818 664796 707586 813802 865381 932727 944052 997194 1072739 1220703 1243636 1415172 1627604 1730762 1865454 1994388 2145478 2281459 2441406 2596143 3218217 3419999 3461524 3730908 4290956 4562918 4882812 5192286 5585641 6436434 6839998 6844377 9125836 10259997 10384572 11171282 11800129 12872868 13679996 13688754 16756923 20519994 22342564 23600258 25096049 27377508 33513846 35400387 41039988 47200516 50192098 61442051 67027692 70800774 75288147 100384196 122884102 141601548 150576294 161983589 184326153 245768204 301152588 323967178 368652306 485950767 647934356 737304612 971901534 1781819479 1943803068 3563638958 5345458437 7127277916 10690916874 21381833748
• Sum of all divisors σ(n): 57584701440
• Sum of proper divisors (its aliquot sum) s(n): 36202867692
• 21381833748 is an abundant number, because the sum of its proper divisors (36202867692) is greater than itself. Its abundance is 14821033944

Bases of 21381833748

• Binary: 10011111010011101001110010000010100₂
• Hexadecimal: 0x4FA74E414
• Base-36: 9TM6WIC

Squares and roots of 21381833748

• 21381833748 squared (21381833748²) is 457182814427111727504
• 21381833748 cubed (21381833748³) is 9775406930523238821311607004992
• The square root of 21381833748 is 146225.2842295067
• The cube root of 21381833748 is 2775.5452759831

Scales and comparisons

• 21,381,833,748 seconds is equal to 679 years, 45 weeks, 3 days, 22 hours, 15 minutes, 48 seconds.
• To count from 1 to 21,381,833,748 would take you about one thousand, three hundred fifty-nine 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 21381833748 cubic inches would be around 231.3 feet tall.

Recreational maths with 21381833748

• 21381833748 backwards is 84733818312
• The number of decimal digits it has is: 11
• The sum of 21381833748's digits is 48
• More coming soon!