20,187

3² × 2243

Prime Factor Structure

Factorization String 3^2 × 2243

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Total Divisors 6

Divisor Sum (σ) 29,172

Proper Divisor Sum 8,985

Digit Sum / Digital Root 18 (Root: 9)

Adjacent Primes #20183 ← → #20201

1 3 9 2,243 6,729 20,187

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

20,187 60,562 30,281 90,844 45,422 22,711 68,134 34,067 102,202 51,101 153,304 76,652 38,326 19,163 57,490 28,745 86,236 43,118 21,559 64,678 32,339 97,018 48,509 145,528 72,764 36,382 18,191 54,574 27,287 81,862 40,931 122,794 61,397 184,192 92,096 46,048 23,024 11,512 5,756 2,878 1,439 4,318 2,159 6,478 3,239 9,718 4,859 14,578 7,289 21,868 10,934 5,467 16,402 8,201 24,604 12,302 6,151 18,454 9,227 27,682

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