λ
Ratio Atlas

2,197,129

11 × 199739
Deficient Odd Composite

2,197,129 factors as 11 × 199739. Its 4 positive divisors give a proper-divisor sum of 199,751, so this integer is deficient. The Collatz stopping time is 210 steps.

Prime Factor Structure

Factorization String 11 × 199739
Distinct Prime Factors 2
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 4
Divisor Sum (σ) 2,396,880
Proper Divisor Sum 199,751
Digit Sum / Digital Root 31 (Root: 4)
Adjacent Primes #2197087 ← → #2197157

Radix Representation

Decimal 2197129
Binary 1000011000011010001001 (22 bits)
Octal 0o10303211
Hexadecimal 0x218689

Divisor Catalog (4)

Collatz Trajectory (210 steps to reach 1)

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

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