21838378688

Names of 21838378688

• Cardinal: 21838378688 can be written as Twenty-one billion, eight hundred thirty-eight million, three hundred seventy-eight thousand, six hundred eighty-eight.

Scientific notation

• Scientific notation: 2.1838378688 × 10¹⁰

Factors of 21838378688

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 533

Divisors of 21838378688

• Number of divisors d(n): 224
• Complete list of divisors:
  1 2 4 7 8 14 16 19 28 32 38 56 61 64 76 112 122 133 137 152 224 244 266 274 304 307 427 448 488 532 548 608 614 854 959 976 1064 1096 1159 1216 1228 1708 1918 1952 2128 2149 2192 2318 2456 2603 3416 3836 3904 4256 4298 4384 4636 4912 5206 5833 6832 7672 8113 8357 8512 8596 8768 9272 9824 10412 11666 13664 15344 16226 16714 17192 18221 18544 18727 19648 20824 23332 27328 30688 32452 33428 34384 36442 37088 37454 40831 41648 42059 46664 58499 61376 64904 66856 68768 72884 74176 74908 81662 83296 84118 93328 116998 129808 131089 133712 137536 145768 149816 158783 163324 166592 168236 186656 233996 259616 262178 267424 291536 294413 299632 317566 326648 336472 355813 373312 467992 519232 524356 534848 583072 588826 599264 635132 653296 672944 711626 799121 935984 1048712 1111481 1166144 1177652 1198528 1270264 1306592 1345888 1423252 1598242 1871968 2097424 2222962 2355304 2490691 2540528 2565599 2613184 2691776 2846504 3196484 3743936 4194848 4445924 4710608 4981382 5081056 5131198 5593847 5693008 6392968 8389696 8891848 9421216 9962764 10162112 10262396 11187694 11386016 12785936 17783696 17959193 18842432 19925528 20524792 22375388 22772032 25571872 35567392 35918386 39851056 41049584 44750776 48746381 51143744 71134784 71836772 79702112 82099168 89501552 97492762 143673544 159404224 164198336 179003104 194985524 287347088 341224667 358006208 389971048 574694176 682449334 779942096 1149388352 1364898668 1559884192 2729797336 3119768384 5459594672 10919189344 21838378688
• Sum of all divisors σ(n): 53548239360
• Sum of proper divisors (its aliquot sum) s(n): 31709860672
• 21838378688 is an abundant number, because the sum of its proper divisors (31709860672) is greater than itself. Its abundance is 9871481984

Bases of 21838378688

• Binary: 10100010101101010110011011011000000₂
• Hexadecimal: 0x515AB36C0
• Base-36: A1608U8

Squares and roots of 21838378688

• 21838378688 squared (21838378688²) is 476914783720492601344
• 21838378688 cubed (21838378688³) is 10415045648793734974052489756672
• The square root of 21838378688 is 147778.1400884447
• The cube root of 21838378688 is 2795.1608032141

Scales and comparisons

• 21,838,378,688 seconds is equal to 694 years, 20 weeks, 3 days, 18 minutes, 8 seconds.
• To count from 1 to 21,838,378,688 would take you about one thousand, three hundred eighty-eight 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 21838378688 cubic inches would be around 232.9 feet tall.

Recreational maths with 21838378688

• 21838378688 backwards is 88687383812
• The number of decimal digits it has is: 11
• The sum of 21838378688's digits is 62
• More coming soon!