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Math Directory

2,667,998

2 × 1333999
Deficient Even Composite

2,667,998 factors as 2 × 1333999. Its 4 positive divisors give a proper-divisor sum of 1,334,002, so this integer is deficient. The Collatz stopping time is 143 steps.

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Prime Factor Structure

Factorization String 2 × 1333999
Distinct Prime Factors 2
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 4
Divisor Sum (σ) 4,002,000
Proper Divisor Sum 1,334,002
Digit Sum / Digital Root 47 (Root: 2)
Adjacent Primes #2667989 ← → #2668027

Radix Representation

Decimal 2667998
Binary 1010001011010111011110 (22 bits)
Octal 0o12132736
Hexadecimal 0x28B5DE

Divisor Catalog (4)

1 2 1,333,999 2,667,998

Collatz Trajectory (143 steps to reach 1)

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

Showing the first 5 trajectory entries; the stopping-time total above is unchanged.

2,667,998 1,333,999 4,001,998 2,000,999 6,002,998

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