21938338128

Names of 21938338128

• Cardinal: 21938338128 can be written as Twenty-one billion, nine hundred thirty-eight million, three hundred thirty-eight thousand, one hundred twenty-eight.

Scientific notation

• Scientific notation: 2.1938338128 × 10¹⁰

Factors of 21938338128

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 2186

Divisors of 21938338128

• Number of divisors d(n): 120
• Complete list of divisors:
  1 2 3 4 6 7 8 12 14 16 21 24 28 42 48 56 84 112 168 181 336 362 543 724 1086 1267 1448 1993 2172 2534 2896 3801 3986 4344 5068 5979 7602 7972 8688 10136 11958 13951 15204 15944 20272 23916 27902 30408 31888 32761 41853 47832 55804 60816 65522 83706 95664 98283 111608 131044 167412 196566 223216 229327 262088 334824 360733 393132 458654 524176 669648 687981 721466 786264 917308 1082199 1375962 1442932 1572528 1834616 2164398 2525131 2751924 2885864 3669232 4328796 5050262 5503848 5771728 7575393 8657592 10100524 11007696 15150786 17315184 20201048 30301572 40402096 60603144 65292673 121206288 130585346 195878019 261170692 391756038 457048711 522341384 783512076 914097422 1044682768 1371146133 1567024152 1828194844 2742292266 3134048304 3656389688 5484584532 7312779376 10969169064 21938338128
• Sum of all divisors σ(n): 65162835264
• Sum of proper divisors (its aliquot sum) s(n): 43224497136
• 21938338128 is an abundant number, because the sum of its proper divisors (43224497136) is greater than itself. Its abundance is 21286159008

Bases of 21938338128

• Binary: 10100011011101000000111100101010000₂
• Hexadecimal: 0x51BA07950
• Base-36: A2TIQ1C

Squares and roots of 21938338128

• 21938338128 squared (21938338128²) is 481290679818458544384
• 21938338128 cubed (21938338128³) is 10558717671712329202446887473152
• The square root of 21938338128 is 148115.9617596969
• The cube root of 21938338128 is 2799.4190175537

Scales and comparisons

• 21,938,338,128 seconds is equal to 697 years, 29 weeks, 4 days, 22 hours, 48 minutes, 48 seconds.
• To count from 1 to 21,938,338,128 would take you about one thousand, three hundred ninety-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 21938338128 cubic inches would be around 233.3 feet tall.

Recreational maths with 21938338128

• 21938338128 backwards is 82183383912
• 21938338128 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21938338128's digits is 48
• More coming soon!