21490042608

Names of 21490042608

• Cardinal: 21490042608 can be written as Twenty-one billion, four hundred ninety million, forty-two thousand, six hundred eight.

Scientific notation

• Scientific notation: 2.1490042608 × 10¹⁰

Factors of 21490042608

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 117

Divisors of 21490042608

• Number of divisors d(n): 200
• Complete list of divisors:
  1 2 3 4 6 8 9 12 16 18 24 27 29 36 48 54 58 72 81 83 87 108 116 144 162 166 174 216 232 249 261 324 332 348 432 464 498 522 648 664 696 747 783 996 1044 1296 1328 1392 1494 1566 1992 2088 2241 2349 2407 2988 3132 3984 4176 4482 4698 4814 5976 6264 6723 6889 7221 8964 9396 9628 11952 12528 13446 13778 14442 17928 18792 19256 20667 21663 26892 27556 28884 35856 37584 38512 41334 43326 53784 55112 57768 62001 64989 82668 86652 107568 110224 115536 124002 129978 165336 173304 186003 194967 199781 248004 259956 330672 346608 372006 389934 399562 496008 519912 558009 571787 599343 744012 779868 799124 992016 1039824 1116018 1143574 1198686 1488024 1559736 1598248 1715361 1798029 2232036 2287148 2397372 2976048 3119472 3196496 3430722 3596058 4464072 4574296 4794744 5146083 5394087 6861444 7192116 8928144 9148592 9589488 10292166 10788174 13722888 14384232 15438249 16182261 16581823 20584332 21576348 27445776 28768464 30876498 32364522 33163646 41168664 43152696 46314747 49745469 61752996 64729044 66327292 82337328 86305392 92629494 99490938 123505992 129458088 132654584 149236407 185258988 198981876 247011984 258916176 265309168 298472814 370517976 397963752 447709221 596945628 741035952 795927504 895418442 1193891256 1343127663 1790836884 2387782512 2686255326 3581673768 5372510652 7163347536 10745021304 21490042608
• Sum of all divisors σ(n): 65127862800
• Sum of proper divisors (its aliquot sum) s(n): 43637820192
• 21490042608 is an abundant number, because the sum of its proper divisors (43637820192) is greater than itself. Its abundance is 22147777584

Bases of 21490042608

• Binary: 10100000000111010000000011011110000₂
• Hexadecimal: 0x500E806F0
• Base-36: 9VEM700

Squares and roots of 21490042608

• 21490042608 squared (21490042608²) is 461821931293655441664
• 21490042608 cubed (21490042608³) is 9924572980809504001430418419712
• The square root of 21490042608 is 146594.8246289753
• The cube root of 21490042608 is 2780.2195454857

Scales and comparisons

• 21,490,042,608 seconds is equal to 683 years, 16 weeks, 3 days, 8 hours, 16 minutes, 48 seconds.
• To count from 1 to 21,490,042,608 would take you about one thousand, three hundred sixty-six 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 21490042608 cubic inches would be around 231.7 feet tall.

Recreational maths with 21490042608

• 21490042608 backwards is 80624009412
• 21490042608 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21490042608's digits is 36
• More coming soon!