2² × 5 × 13 × 109

Prime Factor Structure

Factorization String 2^2 × 5 × 13 × 109

Distinct Prime Factors 4

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 24

Divisor Sum (σ) 64,680

Proper Divisor Sum 36,340

Digit Sum / Digital Root 17 (Root: 8)

Adjacent Primes #28319 ← → #28349

1 2 4 5 10 13 20 26 52 65 109 130 218 260 436 545 1,090 1,417 2,180 2,834 5,668 7,085 14,170 28,340

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

28,340 14,170 7,085 21,256 10,628 5,314 2,657 7,972 3,986 1,993 5,980 2,990 1,495 4,486 2,243 6,730 3,365 10,096 5,048 2,524 1,262 631 1,894 947 2,842 1,421 4,264 2,132 1,066 533 1,600 800 400 200 100 50 25 76 38 19 58 29 88 44 22 11 34 17 52 26 13 40 20 10 5 16 8 4 2 1

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