3² × 7 × 17²

Prime Factor Structure

Factorization String 3^2 × 7 × 17^2

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 18

Divisor Sum (σ) 31,928

Proper Divisor Sum 13,721

Digit Sum / Digital Root 18 (Root: 9)

Adjacent Primes #18199 ← → #18211

1 3 7 9 17 21 51 63 119 153 289 357 867 1,071 2,023 2,601 6,069 18,207

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

18,207 54,622 27,311 81,934 40,967 122,902 61,451 184,354 92,177 276,532 138,266 69,133 207,400 103,700 51,850 25,925 77,776 38,888 19,444 9,722 4,861 14,584 7,292 3,646 1,823 5,470 2,735 8,206 4,103 12,310 6,155 18,466 9,233 27,700 13,850 6,925 20,776 10,388 5,194 2,597 7,792 3,896 1,948 974 487 1,462 731 2,194 1,097 3,292 1,646 823 2,470 1,235 3,706 1,853 5,560 2,780 1,390 695

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