2⁷ × 17 × 37 × 269

Prime Factor Structure

Factorization String 2^7 × 17 × 37 × 269

Distinct Prime Factors 4

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 64

Divisor Sum (σ) 47,093,400

Proper Divisor Sum 25,435,672

Digit Sum / Digital Root 38 (Root: 2)

Adjacent Primes #21657721 ← → #21657731

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

21,657,728 10,828,864 5,414,432 2,707,216 1,353,608 676,804 338,402 169,201 507,604 253,802 126,901 380,704 190,352 95,176 47,588 23,794 11,897 35,692 17,846 8,923 26,770 13,385 40,156 20,078 10,039 30,118 15,059 45,178 22,589 67,768 33,884 16,942 8,471 25,414 12,707 38,122 19,061 57,184 28,592 14,296 7,148 3,574 1,787 5,362 2,681 8,044 4,022 2,011 6,034 3,017 9,052 4,526 2,263 6,790 3,395 10,186 5,093 15,280 7,640 3,820

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