21432768

Names of 21432768

• Cardinal: 21432768 can be written as Twenty-one million, four hundred thirty-two thousand, seven hundred sixty-eight.

Scientific notation

• Scientific notation: 2.1432768 × 10⁷

Factors of 21432768

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 480

Divisors of 21432768

• Number of divisors d(n): 112
• Complete list of divisors:
  1 2 3 4 6 7 8 12 14 16 21 24 28 32 37 42 48 56 64 74 84 96 111 112 148 168 192 222 224 259 296 336 431 444 448 518 592 672 777 862 888 1036 1184 1293 1344 1554 1724 1776 2072 2368 2586 3017 3108 3448 3552 4144 5172 6034 6216 6896 7104 8288 9051 10344 12068 12432 13792 15947 16576 18102 20688 24136 24864 27584 31894 36204 41376 47841 48272 49728 63788 72408 82752 95682 96544 111629 127576 144816 191364 193088 223258 255152 289632 334887 382728 446516 510304 579264 669774 765456 893032 1020608 1339548 1530912 1786064 2679096 3061824 3572128 5358192 7144256 10716384 21432768
• Sum of all divisors σ(n): 66714624
• Sum of proper divisors (its aliquot sum) s(n): 45281856
• 21432768 is an abundant number, because the sum of its proper divisors (45281856) is greater than itself. Its abundance is 23849088

Bases of 21432768

• Binary: 1010001110000100111000000₂
• Hexadecimal: 0x14709C0
• Base-36: CRDMO

Squares and roots of 21432768

• 21432768 squared (21432768²) is 459363544141824
• 21432768 cubed (21432768³) is 9845432269249472888832
• The square root of 21432768 is 4629.5537581931
• The cube root of 21432768 is 277.7747429121

Scales and comparisons

• 21,432,768 seconds is equal to 35 weeks, 3 days, 1 hour, 32 minutes, 48 seconds.
• To count from 1 to 21,432,768 would take you about two 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 21432768 cubic inches would be around 23.1 feet tall.

Recreational maths with 21432768

• 21432768 backwards is 86723412
• The number of decimal digits it has is: 8
• The sum of 21432768's digits is 33
• More coming soon!