21418992

Names of 21418992

• Cardinal: 21418992 can be written as Twenty-one million, four hundred eighteen thousand, nine hundred ninety-two.

Scientific notation

• Scientific notation: 2.1418992 × 10⁷

Factors of 21418992

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 799

Divisors of 21418992

• Number of divisors d(n): 120
• Complete list of divisors:
  1 2 3 4 6 7 8 9 12 14 16 18 21 24 27 28 36 42 48 54 56 63 72 81 84 108 112 126 144 162 168 189 216 243 252 324 336 378 432 486 504 567 648 756 787 972 1008 1134 1296 1512 1574 1701 1944 2268 2361 3024 3148 3402 3888 4536 4722 5509 6296 6804 7083 9072 9444 11018 12592 13608 14166 16527 18888 21249 22036 27216 28332 33054 37776 42498 44072 49581 56664 63747 66108 84996 88144 99162 113328 127494 132216 148743 169992 191241 198324 254988 264432 297486 339984 382482 396648 446229 509976 594972 764964 793296 892458 1019952 1189944 1338687 1529928 1784916 2379888 2677374 3059856 3569832 5354748 7139664 10709496 21418992
• Sum of all divisors σ(n): 71134336
• Sum of proper divisors (its aliquot sum) s(n): 49715344
• 21418992 is an abundant number, because the sum of its proper divisors (49715344) is greater than itself. Its abundance is 28296352

Bases of 21418992

• Binary: 1010001101101001111110000₂
• Hexadecimal: 0x146D3F0
• Base-36: CR300

Squares and roots of 21418992

• 21418992 squared (21418992²) is 458773218296064
• 21418992 cubed (21418992³) is 9826459892497648447488
• The square root of 21418992 is 4628.0656866557
• The cube root of 21418992 is 277.7152165361

Scales and comparisons

• 21,418,992 seconds is equal to 35 weeks, 2 days, 21 hours, 43 minutes, 12 seconds.
• To count from 1 to 21,418,992 would take you about twenty hours!

  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 21418992 cubic inches would be around 23.1 feet tall.

Recreational maths with 21418992

• 21418992 backwards is 29981412
• 21418992 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 21418992's digits is 36
• More coming soon!