λ
Ratio Atlas

4,005,686

2 × 773 × 2591
Deficient Even Composite

4,005,686 factors as 2 × 773 × 2591. Its 8 positive divisors give a proper-divisor sum of 2,012,938, so this integer is deficient. The Collatz stopping time is 198 steps.

Prime Factor Structure

Factorization String 2 × 773 × 2591
Distinct Prime Factors 3
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 8
Divisor Sum (σ) 6,018,624
Proper Divisor Sum 2,012,938
Digit Sum / Digital Root 29 (Root: 2)
Adjacent Primes #4005653 ← → #4005691

Radix Representation

Decimal 4005686
Binary 1111010001111100110110 (22 bits)
Octal 0o17217466
Hexadecimal 0x3D1F36

Divisor Catalog (8)

Collatz Trajectory (198 steps to reach 1)

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

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