2 × 3² × 21997

Prime Factor Structure

Factorization String 2 × 3^2 × 21997

Distinct Prime Factors 3

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 12

Divisor Sum (σ) 857,922

Proper Divisor Sum 461,976

Digit Sum / Digital Root 36 (Root: 9)

Adjacent Primes #395921 ← → #395953

1 2 3 6 9 18 21,997 43,994 65,991 131,982 197,973 395,946

Iterative sequence n → n/2 (if even) or 3n+1 (if odd):

395,946 197,973 593,920 296,960 148,480 74,240 37,120 18,560 9,280 4,640 2,320 1,160 580 290 145 436 218 109 328 164 82 41 124 62 31 94 47 142 71 214 107 322 161 484 242 121 364 182 91 274 137 412 206 103 310 155 466 233 700 350 175 526 263 790 395 1,186 593 1,780 890 445

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