21443136

Names of 21443136

• Cardinal: 21443136 can be written as Twenty-one million, four hundred forty-three thousand, one hundred thirty-six.

Scientific notation

• Scientific notation: 2.1443136 × 10⁷

Factors of 21443136

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 100

Divisors of 21443136

• Number of divisors d(n): 168
• Complete list of divisors:
  1 2 3 4 6 8 11 12 13 16 22 24 26 32 33 39 44 48 52 64 66 71 78 88 96 104 121 132 142 143 156 176 192 208 213 242 264 284 286 312 352 363 416 426 429 484 528 568 572 624 704 726 781 832 852 858 923 968 1056 1136 1144 1248 1452 1562 1573 1704 1716 1846 1936 2112 2272 2288 2343 2496 2769 2904 3124 3146 3408 3432 3692 3872 4544 4576 4686 4719 5538 5808 6248 6292 6816 6864 7384 7744 8591 9152 9372 9438 10153 11076 11616 12496 12584 13632 13728 14768 17182 18744 18876 20306 22152 23232 24992 25168 25773 27456 29536 30459 34364 37488 37752 40612 44304 49984 50336 51546 59072 60918 68728 74976 75504 81224 88608 100672 103092 111683 121836 137456 149952 151008 162448 177216 206184 223366 243672 274912 302016 324896 335049 412368 446732 487344 549824 649792 670098 824736 893464 974688 1340196 1649472 1786928 1949376 2680392 3573856 5360784 7147712 10721568 21443136
• Sum of all divisors σ(n): 68104512
• Sum of proper divisors (its aliquot sum) s(n): 46661376
• 21443136 is an abundant number, because the sum of its proper divisors (46661376) is greater than itself. Its abundance is 25218240

Bases of 21443136

• Binary: 1010001110011001001000000₂
• Hexadecimal: 0x1473240
• Base-36: CRLMO

Squares and roots of 21443136

• 21443136 squared (21443136²) is 459808081514496
• 21443136 cubed (21443136³) is 9859727225814423699456
• The square root of 21443136 is 4630.6733851569
• The cube root of 21443136 is 277.8195264303

Scales and comparisons

• 21,443,136 seconds is equal to 35 weeks, 3 days, 4 hours, 25 minutes, 36 seconds.
• To count from 1 to 21,443,136 would take you about six 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 21443136 cubic inches would be around 23.2 feet tall.

Recreational maths with 21443136

• 21443136 backwards is 63134412
• 21443136 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 21443136's digits is 24
• More coming soon!