2³ × 3³ × 5 × 19559

Prime Factor Structure

Factorization String 2^3 × 3^3 × 5 × 19559

Distinct Prime Factors 4

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 64

Divisor Sum (σ) 70,416,000

Proper Divisor Sum 49,292,280

Digit Sum / Digital Root 18 (Root: 9)

Adjacent Primes #21123709 ← → #21123721

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

21,123,720 10,561,860 5,280,930 2,640,465 7,921,396 3,960,698 1,980,349 5,941,048 2,970,524 1,485,262 742,631 2,227,894 1,113,947 3,341,842 1,670,921 5,012,764 2,506,382 1,253,191 3,759,574 1,879,787 5,639,362 2,819,681 8,459,044 4,229,522 2,114,761 6,344,284 3,172,142 1,586,071 4,758,214 2,379,107 7,137,322 3,568,661 10,705,984 5,352,992 2,676,496 1,338,248 669,124 334,562 167,281 501,844 250,922 125,461 376,384 188,192 94,096 47,048 23,524 11,762 5,881 17,644 8,822 4,411 13,234 6,617 19,852 9,926 4,963 14,890 7,445 22,336

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