3² × 7² × 17 × 29

Prime Factor Structure

Factorization String 3^2 × 7^2 × 17 × 29

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 36

Divisor Sum (σ) 400,140

Proper Divisor Sum 182,727

Digit Sum / Digital Root 18 (Root: 9)

Adjacent Primes #217411 ← → #217421

1 3 7 9 17 21 29 49 51 63 87 119 147 153 203 261 357 441 493 609 833 1,071 1,421 1,479 1,827 2,499 3,451 4,263 4,437 7,497 10,353 12,789 24,157 31,059 72,471 217,413

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

217,413 652,240 326,120 163,060 81,530 40,765 122,296 61,148 30,574 15,287 45,862 22,931 68,794 34,397 103,192 51,596 25,798 12,899 38,698 19,349 58,048 29,024 14,512 7,256 3,628 1,814 907 2,722 1,361 4,084 2,042 1,021 3,064 1,532 766 383 1,150 575 1,726 863 2,590 1,295 3,886 1,943 5,830 2,915 8,746 4,373 13,120 6,560 3,280 1,640 820 410 205 616 308 154 77 232

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