3 × 7 × 19889

Prime Factor Structure

Factorization String 3 × 7 × 19889

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 8

Divisor Sum (σ) 636,480

Proper Divisor Sum 218,811

Digit Sum / Digital Root 33 (Root: 6)

Adjacent Primes #417649 ← → #417671

1 3 7 21 19,889 59,667 139,223 417,669

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

417,669 1,253,008 626,504 313,252 156,626 78,313 234,940 117,470 58,735 176,206 88,103 264,310 132,155 396,466 198,233 594,700 297,350 148,675 446,026 223,013 669,040 334,520 167,260 83,630 41,815 125,446 62,723 188,170 94,085 282,256 141,128 70,564 35,282 17,641 52,924 26,462 13,231 39,694 19,847 59,542 29,771 89,314 44,657 133,972 66,986 33,493 100,480 50,240 25,120 12,560 6,280 3,140 1,570 785 2,356 1,178 589 1,768 884 442

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