21722940

Names of 21722940

• Cardinal: 21722940 can be written as Twenty-one million, seven hundred twenty-two thousand, nine hundred forty.

Scientific notation

• Scientific notation: 2.172294 × 10⁷

Factors of 21722940

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 287

Divisors of 21722940

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 3 4 5 6 9 10 12 15 17 18 20 30 31 34 36 45 51 60 62 68 85 90 93 102 124 153 155 170 180 186 204 229 255 279 306 310 340 372 458 465 510 527 558 612 620 687 765 916 930 1020 1054 1116 1145 1374 1395 1530 1581 1860 2061 2108 2290 2635 2748 2790 3060 3162 3435 3893 4122 4580 4743 5270 5580 6324 6870 7099 7786 7905 8244 9486 10305 10540 11679 13740 14198 15572 15810 18972 19465 20610 21297 23358 23715 28396 31620 35037 35495 38930 41220 42594 46716 47430 58395 63891 70074 70990 77860 85188 94860 106485 116790 120683 127782 140148 141980 175185 212970 233580 241366 255564 319455 350370 362049 425940 482732 603415 638910 700740 724098 1086147 1206830 1277820 1448196 1810245 2172294 2413660 3620490 4344588 5430735 7240980 10861470 21722940
• Sum of all divisors σ(n): 72334080
• Sum of proper divisors (its aliquot sum) s(n): 50611140
• 21722940 is an abundant number, because the sum of its proper divisors (50611140) is greater than itself. Its abundance is 28888200

Bases of 21722940

• Binary: 1010010110111011100111100₂
• Hexadecimal: 0x14B773C
• Base-36: CXLJ0

Squares and roots of 21722940

• 21722940 squared (21722940²) is 471886122243600
• 21722940 cubed (21722940³) is 10250753920330388184000
• The square root of 21722940 is 4660.7874871099
• The cube root of 21722940 is 279.0226982727

Scales and comparisons

• 21,722,940 seconds is equal to 35 weeks, 6 days, 10 hours, 9 minutes.
• To count from 1 to 21,722,940 would take you about six 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 21722940 cubic inches would be around 23.3 feet tall.

Recreational maths with 21722940

• 21722940 backwards is 04922712
• The number of decimal digits it has is: 8
• The sum of 21722940's digits is 27
• More coming soon!