2³ × 5 × 16007

Prime Factor Structure

Factorization String 2^3 × 5 × 16007

Distinct Prime Factors 3

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 16

Divisor Sum (σ) 1,440,720

Proper Divisor Sum 800,440

Digit Sum / Digital Root 20 (Root: 2)

Adjacent Primes #640279 ← → #640303

1 2 4 5 8 10 20 40 16,007 32,014 64,028 80,035 128,056 160,070 320,140 640,280

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

640,280 320,140 160,070 80,035 240,106 120,053 360,160 180,080 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.