21385939584

Names of 21385939584

• Cardinal: 21385939584 can be written as Twenty-one billion, three hundred eighty-five million, nine hundred thirty-nine thousand, five hundred eighty-four.

Scientific notation

• Scientific notation: 2.1385939584 × 10¹⁰

Factors of 21385939584

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 173

Divisors of 21385939584

• Number of divisors d(n): 128
• Complete list of divisors:
  1 2 3 4 6 8 12 16 24 32 48 64 79 89 96 128 158 178 192 237 267 316 356 384 474 534 632 712 948 1068 1264 1424 1896 2136 2528 2848 3792 4272 5056 5696 7031 7584 7921 8544 10112 11392 14062 15168 15842 17088 21093 23763 28124 30336 31684 34176 42186 47526 56248 63368 84372 95052 112496 126736 168744 190104 224992 253472 337488 380208 449984 506944 625759 674976 704969 760416 899968 1013888 1251518 1349952 1409938 1520832 1877277 2114907 2503036 2699904 2819876 3041664 3754554 4229814 5006072 5639752 7509108 8459628 10012144 11279504 15018216 16919256 20024288 22559008 30036432 33838512 40048576 45118016 55692551 60072864 67677024 80097152 90236032 111385102 120145728 135354048 167077653 222770204 240291456 270708096 334155306 445540408 668310612 891080816 1336621224 1782161632 2673242448 3564323264 5346484896 7128646528 10692969792 21385939584
• Sum of all divisors σ(n): 58179168000
• Sum of proper divisors (its aliquot sum) s(n): 36793228416
• 21385939584 is an abundant number, because the sum of its proper divisors (36793228416) is greater than itself. Its abundance is 15407288832

Bases of 21385939584

• Binary: 10011111010101100111000101010000000₂
• Hexadecimal: 0x4FAB38A80
• Base-36: 9TOMWLC

Squares and roots of 21385939584

• 21385939584 squared (21385939584²) is 457358411890498093056
• 21385939584 cubed (21385939584³) is 9781039364924379441762825928704
• The square root of 21385939584 is 146239.3229743629
• The cube root of 21385939584 is 2775.7229221803

Scales and comparisons

• 21,385,939,584 seconds is equal to 680 years, 2 days, 10 hours, 46 minutes, 24 seconds.
• To count from 1 to 21,385,939,584 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 21385939584 cubic inches would be around 231.3 feet tall.

Recreational maths with 21385939584

• 21385939584 backwards is 48593958312
• The number of decimal digits it has is: 11
• The sum of 21385939584's digits is 57
• More coming soon!