2² × 5 × 19891

Prime Factor Structure

Factorization String 2^2 × 5 × 19891

Distinct Prime Factors 3

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 12

Divisor Sum (σ) 835,464

Proper Divisor Sum 437,644

Digit Sum / Digital Root 29 (Root: 2)

Adjacent Primes #397811 ← → #397829

1 2 4 5 10 20 19,891 39,782 79,564 99,455 198,910 397,820

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

397,820 198,910 99,455 298,366 149,183 447,550 223,775 671,326 335,663 1,006,990 503,495 1,510,486 755,243 2,265,730 1,132,865 3,398,596 1,699,298 849,649 2,548,948 1,274,474 637,237 1,911,712 955,856 477,928 238,964 119,482 59,741 179,224 89,612 44,806 22,403 67,210 33,605 100,816 50,408 25,204 12,602 6,301 18,904 9,452 4,726 2,363 7,090 3,545 10,636 5,318 2,659 7,978 3,989 11,968 5,984 2,992 1,496 748 374 187 562 281 844 422

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