21131040

Names of 21131040

• Cardinal: 21131040 can be written as Twenty-one million, one hundred thirty-one thousand and forty.

Scientific notation

• Scientific notation: 2.113104 × 10⁷

Factors of 21131040

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 367

Divisors of 21131040

• Number of divisors d(n): 192
• Complete list of divisors:
  1 2 3 4 5 6 7 8 10 12 14 15 16 19 20 21 24 28 30 32 35 38 40 42 48 56 57 60 70 76 80 84 95 96 105 112 114 120 133 140 152 160 168 190 210 224 228 240 266 280 285 304 331 336 380 399 420 456 480 532 560 570 608 662 665 672 760 798 840 912 993 1064 1120 1140 1324 1330 1520 1596 1655 1680 1824 1986 1995 2128 2280 2317 2648 2660 3040 3192 3310 3360 3972 3990 4256 4560 4634 4965 5296 5320 6289 6384 6620 6951 7944 7980 9120 9268 9930 10592 10640 11585 12578 12768 13240 13902 15888 15960 18536 18867 19860 21280 23170 25156 26480 27804 31445 31776 31920 34755 37072 37734 39720 44023 46340 50312 52960 55608 62890 63840 69510 74144 75468 79440 88046 92680 94335 100624 111216 125780 132069 139020 150936 158880 176092 185360 188670 201248 220115 222432 251560 264138 278040 301872 352184 370720 377340 440230 503120 528276 556080 603744 660345 704368 754680 880460 1006240 1056552 1112160 1320690 1408736 1509360 1760920 2113104 2641380 3018720 3521840 4226208 5282760 7043680 10565520 21131040
• Sum of all divisors σ(n): 80317440
• Sum of proper divisors (its aliquot sum) s(n): 59186400
• 21131040 is an abundant number, because the sum of its proper divisors (59186400) is greater than itself. Its abundance is 38055360

Bases of 21131040

• Binary: 1010000100110111100100000₂
• Hexadecimal: 0x1426F20
• Base-36: CKWTC

Squares and roots of 21131040

• 21131040 squared (21131040²) is 446520851481600
• 21131040 cubed (21131040³) is 9435449973491748864000
• The square root of 21131040 is 4596.8510961307
• The cube root of 21131040 is 276.4650843665

Scales and comparisons

• 21,131,040 seconds is equal to 34 weeks, 6 days, 13 hours, 44 minutes.
• To count from 1 to 21,131,040 would take you about two 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 21131040 cubic inches would be around 23 feet tall.

Recreational maths with 21131040

• 21131040 backwards is 04013112
• 21131040 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 21131040's digits is 12
• More coming soon!