λ
Ratio Atlas

12,739,646

2 × 6369823
Deficient Even Composite

12,739,646 factors as 2 × 6369823. Its 4 positive divisors give a proper-divisor sum of 6,369,826, so this integer is deficient. The Collatz stopping time is 378 steps.

Prime Factor Structure

Factorization String 2 × 6369823
Distinct Prime Factors 2
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 4
Divisor Sum (σ) 19,109,472
Proper Divisor Sum 6,369,826
Digit Sum / Digital Root 38 (Root: 2)
Adjacent Primes #12739637 ← → #12739651

Radix Representation

Decimal 12739646
Binary 110000100110010000111110 (24 bits)
Octal 0o60462076
Hexadecimal 0xC2643E

Divisor Catalog (4)

Collatz Trajectory (378 steps to reach 1)

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

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