21143808

Names of 21143808

• Cardinal: 21143808 can be written as Twenty-one million, one hundred forty-three thousand, eight hundred eight.

Scientific notation

• Scientific notation: 2.1143808 × 10⁷

Factors of 21143808

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 14
• Sum of prime factors: 54

Divisors of 21143808

• Number of divisors d(n): 288
• Complete list of divisors:
  1 2 3 4 6 7 8 9 12 14 16 18 19 21 23 24 27 28 32 36 38 42 46 48 54 56 57 63 64 69 72 76 84 92 96 108 112 114 126 128 133 138 144 152 161 168 171 184 189 192 207 216 224 228 252 256 266 276 288 304 322 336 342 368 378 384 399 414 432 437 448 456 483 504 513 532 552 576 608 621 644 672 684 736 756 768 798 828 864 874 896 912 966 1008 1026 1064 1104 1152 1197 1216 1242 1288 1311 1344 1368 1449 1472 1512 1596 1656 1728 1748 1792 1824 1932 2016 2052 2128 2208 2304 2394 2432 2484 2576 2622 2688 2736 2898 2944 3024 3059 3192 3312 3456 3496 3591 3648 3864 3933 4032 4104 4256 4347 4416 4788 4864 4968 5152 5244 5376 5472 5796 5888 6048 6118 6384 6624 6912 6992 7182 7296 7728 7866 8064 8208 8512 8694 8832 9177 9576 9936 10304 10488 10944 11592 11799 12096 12236 12768 13248 13984 14364 14592 15456 15732 16128 16416 17024 17388 17664 18354 19152 19872 20608 20976 21888 23184 23598 24192 24472 25536 26496 27531 27968 28728 30912 31464 32832 34048 34776 36708 38304 39744 41216 41952 43776 46368 47196 48384 48944 51072 52992 55062 55936 57456 61824 62928 65664 69552 73416 76608 79488 82593 83904 92736 94392 97888 102144 110124 111872 114912 123648 125856 131328 139104 146832 153216 158976 165186 167808 185472 188784 195776 220248 229824 251712 278208 293664 306432 330372 335616 370944 377568 391552 440496 459648 503424 556416 587328 660744 755136 783104 880992 919296 1006848 1112832 1174656 1321488 1510272 1761984 2349312 2642976 3020544 3523968 5285952 7047936 10571904 21143808
• Sum of all divisors σ(n): 78489600
• Sum of proper divisors (its aliquot sum) s(n): 57345792
• 21143808 is an abundant number, because the sum of its proper divisors (57345792) is greater than itself. Its abundance is 36201984

Bases of 21143808

• Binary: 1010000101010000100000000₂
• Hexadecimal: 0x142A100
• Base-36: CL6O0

Squares and roots of 21143808

• 21143808 squared (21143808²) is 447060616740864
• 21143808 cubed (21143808³) is 9452563844730414170112
• The square root of 21143808 is 4598.2396631755
• The cube root of 21143808 is 276.5207559517

Scales and comparisons

• 21,143,808 seconds is equal to 34 weeks, 6 days, 17 hours, 16 minutes, 48 seconds.
• To count from 1 to 21,143,808 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 21143808 cubic inches would be around 23 feet tall.

Recreational maths with 21143808

• 21143808 backwards is 80834112
• 21143808 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 21143808's digits is 27
• More coming soon!