2³ × 13 × 47 × 131

Prime Factor Structure

Factorization String 2^3 × 13 × 47 × 131

Distinct Prime Factors 4

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 32

Divisor Sum (σ) 1,330,560

Proper Divisor Sum 690,232

Digit Sum / Digital Root 23 (Root: 5)

Adjacent Primes #640307 ← → #640333

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

640,328 320,164 160,082 80,041 240,124 120,062 60,031 180,094 90,047 270,142 135,071 405,214 202,607 607,822 303,911 911,734 455,867 1,367,602 683,801 2,051,404 1,025,702 512,851 1,538,554 769,277 2,307,832 1,153,916 576,958 288,479 865,438 432,719 1,298,158 649,079 1,947,238 973,619 2,920,858 1,460,429 4,381,288 2,190,644 1,095,322 547,661 1,642,984 821,492 410,746 205,373 616,120 308,060 154,030 77,015 231,046 115,523 346,570 173,285 519,856 259,928 129,964 64,982 32,491 97,474 48,737 146,212

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