21190400

Names of 21190400

• Cardinal: 21190400 can be written as Twenty-one million, one hundred ninety thousand, four hundred.

Scientific notation

• Scientific notation: 2.11904 × 10⁷

Factors of 21190400

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 68

Divisors of 21190400

• Number of divisors d(n): 216
• Complete list of divisors:
  1 2 4 5 7 8 10 11 14 16 20 22 25 28 32 35 40 43 44 50 55 56 64 70 77 80 86 88 100 110 112 128 140 154 160 172 175 176 200 215 220 224 256 275 280 301 308 320 344 350 352 385 400 430 440 448 473 550 560 602 616 640 688 700 704 770 800 860 880 896 946 1075 1100 1120 1204 1232 1280 1376 1400 1408 1505 1540 1600 1720 1760 1792 1892 1925 2150 2200 2240 2365 2408 2464 2752 2800 2816 3010 3080 3200 3311 3440 3520 3784 3850 4300 4400 4480 4730 4816 4928 5504 5600 6020 6160 6400 6622 6880 7040 7525 7568 7700 8600 8800 8960 9460 9632 9856 11008 11200 11825 12040 12320 13244 13760 14080 15050 15136 15400 16555 17200 17600 18920 19264 19712 22400 23650 24080 24640 26488 27520 30100 30272 30800 33110 34400 35200 37840 38528 44800 47300 48160 49280 52976 55040 60200 60544 61600 66220 68800 70400 75680 77056 82775 94600 96320 98560 105952 120400 121088 123200 132440 137600 151360 165550 189200 192640 211904 240800 246400 264880 275200 302720 331100 378400 385280 423808 481600 492800 529760 605440 662200 756800 847616 963200 1059520 1324400 1513600 1926400 2119040 2648800 3027200 4238080 5297600 10595200 21190400
• Sum of all divisors σ(n): 66912384
• Sum of proper divisors (its aliquot sum) s(n): 45721984
• 21190400 is an abundant number, because the sum of its proper divisors (45721984) is greater than itself. Its abundance is 24531584

Bases of 21190400

• Binary: 1010000110101011100000000₂
• Hexadecimal: 0x1435700
• Base-36: CM6M8

Squares and roots of 21190400

• 21190400 squared (21190400²) is 449033052160000
• 21190400 cubed (21190400³) is 9515189988491264000000
• The square root of 21190400 is 4603.3031618611
• The cube root of 21190400 is 276.7237184969

Scales and comparisons

• 21,190,400 seconds is equal to 35 weeks, 6 hours, 13 minutes, 20 seconds.
• To count from 1 to 21,190,400 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 21190400 cubic inches would be around 23.1 feet tall.

Recreational maths with 21190400

• 21190400 backwards is 00409112
• The number of decimal digits it has is: 8
• The sum of 21190400's digits is 17
• More coming soon!