2² × 3² × 13 × 131 × 349

Prime Factor Structure

Factorization String 2^2 × 3^2 × 13 × 131 × 349

Distinct Prime Factors 5

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 72

Divisor Sum (σ) 58,858,800

Proper Divisor Sum 37,462,308

Digit Sum / Digital Root 36 (Root: 9)

Adjacent Primes #21396481 ← → #21396493

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

21,396,492 10,698,246 5,349,123 16,047,370 8,023,685 24,071,056 12,035,528 6,017,764 3,008,882 1,504,441 4,513,324 2,256,662 1,128,331 3,384,994 1,692,497 5,077,492 2,538,746 1,269,373 3,808,120 1,904,060 952,030 476,015 1,428,046 714,023 2,142,070 1,071,035 3,213,106 1,606,553 4,819,660 2,409,830 1,204,915 3,614,746 1,807,373 5,422,120 2,711,060 1,355,530 677,765 2,033,296 1,016,648 508,324 254,162 127,081 381,244 190,622 95,311 285,934 142,967 428,902 214,451 643,354 321,677 965,032 482,516 241,258 120,629 361,888 180,944 90,472 45,236 22,618

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