λ
Ratio Atlas

391,815

32 × 5 × 8707
Deficient Odd Composite

Prime Factor Structure

Factorization String 3^2 × 5 × 8707
Distinct Prime Factors 3
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 12
Divisor Sum (σ) 679,224
Proper Divisor Sum 287,409
Digit Sum / Digital Root 27 (Root: 9)
Adjacent Primes #391801 ← → #391817

Radix Representation

Decimal 391815
Binary 1011111101010000111 (19 bits)
Octal 0o1375207
Hexadecimal 0x5FA87

Divisor Catalog (12)

Collatz Trajectory (68 steps to reach 1)

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

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