2⁴ × 3 × 13339

Prime Factor Structure

Factorization String 2^4 × 3 × 13339

Distinct Prime Factors 3

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 20

Divisor Sum (σ) 1,654,160

Proper Divisor Sum 1,013,888

Digit Sum / Digital Root 21 (Root: 3)

Adjacent Primes #640267 ← → #640279

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

640,272 320,136 160,068 80,034 40,017 120,052 60,026 30,013 90,040 45,020 22,510 11,255 33,766 16,883 50,650 25,325 75,976 37,988 18,994 9,497 28,492 14,246 7,123 21,370 10,685 32,056 16,028 8,014 4,007 12,022 6,011 18,034 9,017 27,052 13,526 6,763 20,290 10,145 30,436 15,218 7,609 22,828 11,414 5,707 17,122 8,561 25,684 12,842 6,421 19,264 9,632 4,816 2,408 1,204 602 301 904 452 226 113

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