2² × 7 × 19 × 409

Prime Factor Structure

Factorization String 2^2 × 7 × 19 × 409

Distinct Prime Factors 4

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 24

Divisor Sum (σ) 459,200

Proper Divisor Sum 241,612

Digit Sum / Digital Root 31 (Root: 4)

Adjacent Primes #217579 ← → #217619

1 2 4 7 14 19 28 38 76 133 266 409 532 818 1,636 2,863 5,726 7,771 11,452 15,542 31,084 54,397 108,794 217,588

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

217,588 108,794 54,397 163,192 81,596 40,798 20,399 61,198 30,599 91,798 45,899 137,698 68,849 206,548 103,274 51,637 154,912 77,456 38,728 19,364 9,682 4,841 14,524 7,262 3,631 10,894 5,447 16,342 8,171 24,514 12,257 36,772 18,386 9,193 27,580 13,790 6,895 20,686 10,343 31,030 15,515 46,546 23,273 69,820 34,910 17,455 52,366 26,183 78,550 39,275 117,826 58,913 176,740 88,370 44,185 132,556 66,278 33,139 99,418 49,709

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