2 × 3² × 5 × 211

Prime Factor Structure

Factorization String 2 × 3^2 × 5 × 211

Distinct Prime Factors 4

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 24

Divisor Sum (σ) 49,608

Proper Divisor Sum 30,618

Digit Sum / Digital Root 27 (Root: 9)

Adjacent Primes #18979 ← → #19001

1 2 3 5 6 9 10 15 18 30 45 90 211 422 633 1,055 1,266 1,899 2,110 3,165 3,798 6,330 9,495 18,990

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

18,990 9,495 28,486 14,243 42,730 21,365 64,096 32,048 16,024 8,012 4,006 2,003 6,010 3,005 9,016 4,508 2,254 1,127 3,382 1,691 5,074 2,537 7,612 3,806 1,903 5,710 2,855 8,566 4,283 12,850 6,425 19,276 9,638 4,819 14,458 7,229 21,688 10,844 5,422 2,711 8,134 4,067 12,202 6,101 18,304 9,152 4,576 2,288 1,144 572 286 143 430 215 646 323 970 485 1,456 728

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