21142128

Names of 21142128

• Cardinal: 21142128 can be written as Twenty-one million, one hundred forty-two thousand, one hundred twenty-eight.

Scientific notation

• Scientific notation: 2.1142128 × 10⁷

Factors of 21142128

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 202

Divisors of 21142128

• Number of divisors d(n): 120
• Complete list of divisors:
  1 2 3 4 6 7 8 12 14 16 21 24 28 42 48 49 56 84 89 98 101 112 147 168 178 196 202 267 294 303 336 356 392 404 534 588 606 623 707 712 784 808 1068 1176 1212 1246 1414 1424 1616 1869 2121 2136 2352 2424 2492 2828 3738 4242 4272 4361 4848 4949 4984 5656 7476 8484 8722 8989 9898 9968 11312 13083 14847 14952 16968 17444 17978 19796 26166 26967 29694 29904 33936 34888 35956 39592 52332 53934 59388 62923 69776 71912 79184 104664 107868 118776 125846 143824 188769 209328 215736 237552 251692 377538 431472 440461 503384 755076 880922 1006768 1321383 1510152 1761844 2642766 3020304 3523688 5285532 7047376 10571064 21142128
• Sum of all divisors σ(n): 64884240
• Sum of proper divisors (its aliquot sum) s(n): 43742112
• 21142128 is an abundant number, because the sum of its proper divisors (43742112) is greater than itself. Its abundance is 22599984

Bases of 21142128

• Binary: 1010000101001101001110000₂
• Hexadecimal: 0x1429A70
• Base-36: CL5DC

Squares and roots of 21142128

• 21142128 squared (21142128²) is 446989576368384
• 21142128 cubed (21142128³) is 9450310838246149681152
• The square root of 21142128 is 4598.0569809431
• The cube root of 21142128 is 276.5134320239

Scales and comparisons

• 21,142,128 seconds is equal to 34 weeks, 6 days, 16 hours, 48 minutes, 48 seconds.
• To count from 1 to 21,142,128 would take you about three days!

  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 21142128 cubic inches would be around 23 feet tall.

Recreational maths with 21142128

• 21142128 backwards is 82124112
• 21142128 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 21142128's digits is 21
• More coming soon!