3³ × 7 × 21391

Prime Factor Structure

Factorization String 3^3 × 7 × 21391

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 16

Divisor Sum (σ) 6,845,440

Proper Divisor Sum 2,802,541

Digit Sum / Digital Root 36 (Root: 9)

Adjacent Primes #4042891 ← → #4042901

1 3 7 9 21 27 63 189 21,391 64,173 149,737 192,519 449,211 577,557 1,347,633 4,042,899

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

4,042,899 12,128,698 6,064,349 18,193,048 9,096,524 4,548,262 2,274,131 6,822,394 3,411,197 10,233,592 5,116,796 2,558,398 1,279,199 3,837,598 1,918,799 5,756,398 2,878,199 8,634,598 4,317,299 12,951,898 6,475,949 19,427,848 9,713,924 4,856,962 2,428,481 7,285,444 3,642,722 1,821,361 5,464,084 2,732,042 1,366,021 4,098,064 2,049,032 1,024,516 512,258 256,129 768,388 384,194 192,097 576,292 288,146 144,073 432,220 216,110 108,055 324,166 162,083 486,250 243,125 729,376 364,688 182,344 91,172 45,586 22,793 68,380 34,190 17,095 51,286 25,643

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