7² × 23 × 47 × 397

Prime Factor Structure

Factorization String 7^2 × 23 × 47 × 397

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 24

Divisor Sum (σ) 26,134,272

Proper Divisor Sum 5,105,579

Digit Sum / Digital Root 31 (Root: 4)

Adjacent Primes #21028673 ← → #21028697

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

21,028,693 63,086,080 31,543,040 15,771,520 7,885,760 3,942,880 1,971,440 985,720 492,860 246,430 123,215 369,646 184,823 554,470 277,235 831,706 415,853 1,247,560 623,780 311,890 155,945 467,836 233,918 116,959 350,878 175,439 526,318 263,159 789,478 394,739 1,184,218 592,109 1,776,328 888,164 444,082 222,041 666,124 333,062 166,531 499,594 249,797 749,392 374,696 187,348 93,674 46,837 140,512 70,256 35,128 17,564 8,782 4,391 13,174 6,587 19,762 9,881 29,644 14,822 7,411 22,234

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