2³ × 11 × 29 × 251

Prime Factor Structure

Factorization String 2^3 × 11 × 29 × 251

Distinct Prime Factors 4

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 32

Divisor Sum (σ) 1,360,800

Proper Divisor Sum 720,248

Digit Sum / Digital Root 22 (Root: 4)

Adjacent Primes #640531 ← → #640579

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

640,552 320,276 160,138 80,069 240,208 120,104 60,052 30,026 15,013 45,040 22,520 11,260 5,630 2,815 8,446 4,223 12,670 6,335 19,006 9,503 28,510 14,255 42,766 21,383 64,150 32,075 96,226 48,113 144,340 72,170 36,085 108,256 54,128 27,064 13,532 6,766 3,383 10,150 5,075 15,226 7,613 22,840 11,420 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

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