2³ × 3⁴ × 23 × 43

Prime Factor Structure

Factorization String 2^3 × 3^4 × 23 × 43

Distinct Prime Factors 4

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 80

Divisor Sum (σ) 1,916,640

Proper Divisor Sum 1,275,768

Digit Sum / Digital Root 27 (Root: 9)

Adjacent Primes #640859 ← → #640873

1 2 3 4 6 8 9 12 18 23 24 27 36 43 46 54 69 72 81 86 92 108 129 138 162 172 184 207 216 258 276 324 344 387 414 516 552 621 648 774 828 989 1,032 1,161 1,242 1,548 1,656 1,863 1,978 2,322 2,484 2,967 3,096 3,483 3,726 3,956 4,644 4,968 5,934 6,966

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

640,872 320,436 160,218 80,109 240,328 120,164 60,082 30,041 90,124 45,062 22,531 67,594 33,797 101,392 50,696 25,348 12,674 6,337 19,012 9,506 4,753 14,260 7,130 3,565 10,696 5,348 2,674 1,337 4,012 2,006 1,003 3,010 1,505 4,516 2,258 1,129 3,388 1,694 847 2,542 1,271 3,814 1,907 5,722 2,861 8,584 4,292 2,146 1,073 3,220 1,610 805 2,416 1,208 604 302 151 454 227 682

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