λ
Ratio Atlas
639,680
26 × 5 × 1999
Abundant Even Composite

Prime Factor Structure

Factorization String 2^6 × 5 × 1999
Distinct Prime Factors 3
Square Status No
Abundance Measure Abundant

Analytical Properties

Total Divisors 28
Divisor Sum (σ) 1,524,000
Proper Divisor Sum 884,320
Digit Sum / Digital Root 32 (Root: 5)
Adjacent Primes #639679 ← → #639689

Radix Representation

Decimal 639680
Binary 10011100001011000000 (20 bits)
Octal 0o2341300
Hexadecimal 0x9C2C0

Divisor Catalog (28)

Collatz Trajectory (71 steps to reach 1)

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

Active Feeder Network

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

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