2⁴ × 7² × 27283

Prime Factor Structure

Factorization String 2^4 × 7^2 × 27283

Distinct Prime Factors 3

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 30

Divisor Sum (σ) 48,210,828

Proper Divisor Sum 26,820,956

Digit Sum / Digital Root 40 (Root: 4)

Adjacent Primes #21389869 ← → #21389887

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

21,389,872 10,694,936 5,347,468 2,673,734 1,336,867 4,010,602 2,005,301 6,015,904 3,007,952 1,503,976 751,988 375,994 187,997 563,992 281,996 140,998 70,499 211,498 105,749 317,248 158,624 79,312 39,656 19,828 9,914 4,957 14,872 7,436 3,718 1,859 5,578 2,789 8,368 4,184 2,092 1,046 523 1,570 785 2,356 1,178 589 1,768 884 442 221 664 332 166 83 250 125 376 188 94 47 142 71 214 107

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