7 × 13 × 19 × 1621

Prime Factor Structure

Factorization String 7 × 13 × 19 × 1621

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 16

Divisor Sum (σ) 3,633,280

Proper Divisor Sum 830,571

Digit Sum / Digital Root 28 (Root: 1)

Adjacent Primes #2802707 ← → #2802743

1 7 13 19 91 133 247 1,621 1,729 11,347 21,073 30,799 147,511 215,593 400,387 2,802,709

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

2,802,709 8,408,128 4,204,064 2,102,032 1,051,016 525,508 262,754 131,377 394,132 197,066 98,533 295,600 147,800 73,900 36,950 18,475 55,426 27,713 83,140 41,570 20,785 62,356 31,178 15,589 46,768 23,384 11,692 5,846 2,923 8,770 4,385 13,156 6,578 3,289 9,868 4,934 2,467 7,402 3,701 11,104 5,552 2,776 1,388 694 347 1,042 521 1,564 782 391 1,174 587 1,762 881 2,644 1,322 661 1,984 992 496

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