21397771

Prime Factor Structure

Factorization String 21397771

Distinct Prime Factors 1

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 2

Divisor Sum (σ) 21,397,772

Proper Divisor Sum 1

Digit Sum / Digital Root 37 (Root: 1)

Adjacent Primes #21397769 ← → #21397787

1 21,397,771

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

21,397,771 64,193,314 32,096,657 96,289,972 48,144,986 24,072,493 72,217,480 36,108,740 18,054,370 9,027,185 27,081,556 13,540,778 6,770,389 20,311,168 10,155,584 5,077,792 2,538,896 1,269,448 634,724 317,362 158,681 476,044 238,022 119,011 357,034 178,517 535,552 267,776 133,888 66,944 33,472 16,736 8,368 4,184 2,092 1,046 523 1,570 785 2,356 1,178 589 1,768 884 442 221 664 332 166 83 250 125 376 188 94 47 142 71 214 107

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