21621427

Prime Factor Structure

Factorization String 21621427

Distinct Prime Factors 1

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 2

Divisor Sum (σ) 21,621,428

Proper Divisor Sum 1

Digit Sum / Digital Root 25 (Root: 7)

Adjacent Primes #21621421 ← → #21621437

1 21,621,427

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

21,621,427 64,864,282 32,432,141 97,296,424 48,648,212 24,324,106 12,162,053 36,486,160 18,243,080 9,121,540 4,560,770 2,280,385 6,841,156 3,420,578 1,710,289 5,130,868 2,565,434 1,282,717 3,848,152 1,924,076 962,038 481,019 1,443,058 721,529 2,164,588 1,082,294 541,147 1,623,442 811,721 2,435,164 1,217,582 608,791 1,826,374 913,187 2,739,562 1,369,781 4,109,344 2,054,672 1,027,336 513,668 256,834 128,417 385,252 192,626 96,313 288,940 144,470 72,235 216,706 108,353 325,060 162,530 81,265 243,796 121,898 60,949 182,848 91,424 45,712 22,856

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