3 × 223 × 20389

Prime Factor Structure

Factorization String 3 × 223 × 20389

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 8

Divisor Sum (σ) 18,269,440

Proper Divisor Sum 4,629,199

Digit Sum / Digital Root 21 (Root: 3)

Adjacent Primes #13640213 ← → #13640257

1 3 223 669 20,389 61,167 4,546,747 13,640,241

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

13,640,241 40,920,724 20,460,362 10,230,181 30,690,544 15,345,272 7,672,636 3,836,318 1,918,159 5,754,478 2,877,239 8,631,718 4,315,859 12,947,578 6,473,789 19,421,368 9,710,684 4,855,342 2,427,671 7,283,014 3,641,507 10,924,522 5,462,261 16,386,784 8,193,392 4,096,696 2,048,348 1,024,174 512,087 1,536,262 768,131 2,304,394 1,152,197 3,456,592 1,728,296 864,148 432,074 216,037 648,112 324,056 162,028 81,014 40,507 121,522 60,761 182,284 91,142 45,571 136,714 68,357 205,072 102,536 51,268 25,634 12,817 38,452 19,226 9,613 28,840 14,420

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