2² × 5 × 647

Prime Factor Structure

Factorization String 2^2 × 5 × 647

Distinct Prime Factors 3

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 12

Divisor Sum (σ) 27,216

Proper Divisor Sum 14,276

Digit Sum / Digital Root 16 (Root: 7)

Adjacent Primes #12923 ← → #12941

1 2 4 5 10 20 647 1,294 2,588 3,235 6,470 12,940

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

12,940 6,470 3,235 9,706 4,853 14,560 7,280 3,640 1,820 910 455 1,366 683 2,050 1,025 3,076 1,538 769 2,308 1,154 577 1,732 866 433 1,300 650 325 976 488 244 122 61 184 92 46 23 70 35 106 53 160 80 40 20 10 5 16 8 4 2 1

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