2 × 3³ × 71 × 167

Prime Factor Structure

Factorization String 2 × 3^3 × 71 × 167

Distinct Prime Factors 4

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 32

Divisor Sum (σ) 1,451,520

Proper Divisor Sum 811,242

Digit Sum / Digital Root 27 (Root: 9)

Adjacent Primes #640267 ← → #640279

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

640,278 320,139 960,418 480,209 1,440,628 720,314 360,157 1,080,472 540,236 270,118 135,059 405,178 202,589 607,768 303,884 151,942 75,971 227,914 113,957 341,872 170,936 85,468 42,734 21,367 64,102 32,051 96,154 48,077 144,232 72,116 36,058 18,029 54,088 27,044 13,522 6,761 20,284 10,142 5,071 15,214 7,607 22,822 11,411 34,234 17,117 51,352 25,676 12,838 6,419 19,258 9,629 28,888 14,444 7,222 3,611 10,834 5,417 16,252 8,126 4,063

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