2² × 5 × 31 × 34511

Prime Factor Structure

Factorization String 2^2 × 5 × 31 × 34511

Distinct Prime Factors 4

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 24

Divisor Sum (σ) 46,384,128

Proper Divisor Sum 24,987,308

Digit Sum / Digital Root 31 (Root: 4)

Adjacent Primes #21396803 ← → #21396827

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

21,396,820 10,698,410 5,349,205 16,047,616 8,023,808 4,011,904 2,005,952 1,002,976 501,488 250,744 125,372 62,686 31,343 94,030 47,015 141,046 70,523 211,570 105,785 317,356 158,678 79,339 238,018 119,009 357,028 178,514 89,257 267,772 133,886 66,943 200,830 100,415 301,246 150,623 451,870 225,935 677,806 338,903 1,016,710 508,355 1,525,066 762,533 2,287,600 1,143,800 571,900 285,950 142,975 428,926 214,463 643,390 321,695 965,086 482,543 1,447,630 723,815 2,171,446 1,085,723 3,257,170 1,628,585 4,885,756

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