2 × 5² × 13 × 647

Prime Factor Structure

Factorization String 2 × 5^2 × 13 × 647

Distinct Prime Factors 4

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 24

Divisor Sum (σ) 843,696

Proper Divisor Sum 423,146

Digit Sum / Digital Root 16 (Root: 7)

Adjacent Primes #420521 ← → #420551

1 2 5 10 13 25 26 50 65 130 325 647 650 1,294 3,235 6,470 8,411 16,175 16,822 32,350 42,055 84,110 210,275 420,550

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

420,550 210,275 630,826 315,413 946,240 473,120 236,560 118,280 59,140 29,570 14,785 44,356 22,178 11,089 33,268 16,634 8,317 24,952 12,476 6,238 3,119 9,358 4,679 14,038 7,019 21,058 10,529 31,588 15,794 7,897 23,692 11,846 5,923 17,770 8,885 26,656 13,328 6,664 3,332 1,666 833 2,500 1,250 625 1,876 938 469 1,408 704 352 176 88 44 22 11 34 17 52 26 13

Other feeder batches with open delivery windows. Each feeder keeps its own target batch.