3 × 5² × 139 × 157

Prime Factor Structure

Factorization String 3 × 5^2 × 139 × 157

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 24

Divisor Sum (σ) 2,742,880

Proper Divisor Sum 1,106,155

Digit Sum / Digital Root 30 (Root: 3)

Adjacent Primes #1636721 ← → #1636729

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

1,636,725 4,910,176 2,455,088 1,227,544 613,772 306,886 153,443 460,330 230,165 690,496 345,248 172,624 86,312 43,156 21,578 10,789 32,368 16,184 8,092 4,046 2,023 6,070 3,035 9,106 4,553 13,660 6,830 3,415 10,246 5,123 15,370 7,685 23,056 11,528 5,764 2,882 1,441 4,324 2,162 1,081 3,244 1,622 811 2,434 1,217 3,652 1,826 913 2,740 1,370 685 2,056 1,028 514 257 772 386 193 580 290

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