2² × 3 × 5 × 13 × 509

Prime Factor Structure

Factorization String 2^2 × 3 × 5 × 13 × 509

Distinct Prime Factors 5

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 48

Divisor Sum (σ) 1,199,520

Proper Divisor Sum 802,500

Digit Sum / Digital Root 21 (Root: 3)

Adjacent Primes #397013 ← → #397027

1 2 3 4 5 6 10 12 13 15 20 26 30 39 52 60 65 78 130 156 195 260 390 509 780 1,018 1,527 2,036 2,545 3,054 5,090 6,108 6,617 7,635 10,180 13,234 15,270 19,851 26,468 30,540 33,085 39,702 66,170 79,404 99,255 132,340 198,510 397,020

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

397,020 198,510 99,255 297,766 148,883 446,650 223,325 669,976 334,988 167,494 83,747 251,242 125,621 376,864 188,432 94,216 47,108 23,554 11,777 35,332 17,666 8,833 26,500 13,250 6,625 19,876 9,938 4,969 14,908 7,454 3,727 11,182 5,591 16,774 8,387 25,162 12,581 37,744 18,872 9,436 4,718 2,359 7,078 3,539 10,618 5,309 15,928 7,964 3,982 1,991 5,974 2,987 8,962 4,481 13,444 6,722 3,361 10,084 5,042 2,521

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