21483840

Names of 21483840

• Cardinal: 21483840 can be written as Twenty-one million, four hundred eighty-three thousand, eight hundred forty.

Scientific notation

• Scientific notation: 2.148384 × 10⁷

Factors of 21483840

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 179

Divisors of 21483840

• Number of divisors d(n): 224
• Complete list of divisors:
  1 2 3 4 5 6 7 8 10 12 14 15 16 20 21 23 24 28 30 32 35 40 42 46 48 56 60 64 69 70 80 84 92 96 105 112 115 120 138 139 140 160 161 168 184 192 210 224 230 240 276 278 280 320 322 336 345 368 417 420 448 460 480 483 552 556 560 644 672 690 695 736 805 834 840 920 960 966 973 1104 1112 1120 1288 1344 1380 1390 1472 1610 1668 1680 1840 1932 1946 2085 2208 2224 2240 2415 2576 2760 2780 2919 3197 3220 3336 3360 3680 3864 3892 4170 4416 4448 4830 4865 5152 5520 5560 5838 6394 6440 6672 6720 7360 7728 7784 8340 8896 9591 9660 9730 10304 11040 11120 11676 12788 12880 13344 14595 15456 15568 15985 16680 19182 19320 19460 22080 22240 22379 23352 25576 25760 26688 29190 30912 31136 31970 33360 38364 38640 38920 44480 44758 46704 47955 51152 51520 58380 62272 63940 66720 67137 76728 77280 77840 89516 93408 95910 102304 111895 116760 127880 133440 134274 153456 154560 155680 179032 186816 191820 204608 223790 233520 255760 268548 306912 311360 335685 358064 383640 447580 467040 511520 537096 613824 671370 716128 767280 895160 934080 1023040 1074192 1342740 1432256 1534560 1790320 2148384 2685480 3069120 3580640 4296768 5370960 7161280 10741920 21483840
• Sum of all divisors σ(n): 81930240
• Sum of proper divisors (its aliquot sum) s(n): 60446400
• 21483840 is an abundant number, because the sum of its proper divisors (60446400) is greater than itself. Its abundance is 38962560

Bases of 21483840

• Binary: 1010001111101000101000000₂
• Hexadecimal: 0x147D140
• Base-36: CSH1C

Squares and roots of 21483840

• 21483840 squared (21483840²) is 461555381145600
• 21483840 cubed (21483840³) is 9915981959671087104000
• The square root of 21483840 is 4635.0663425673
• The cube root of 21483840 is 277.9952037541

Scales and comparisons

• 21,483,840 seconds is equal to 35 weeks, 3 days, 15 hours, 44 minutes.
• To count from 1 to 21,483,840 would take you about twenty-three 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 21483840 cubic inches would be around 23.2 feet tall.

Recreational maths with 21483840

• 21483840 backwards is 04838412
• 21483840 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 21483840's digits is 30
• More coming soon!