λ
Sequence Observatory

4,235,608

23 × 13 × 139 × 293
Abundant Even Composite

Starting at 4,235,608, the Collatz iteration reaches 1 after 123 steps. The first transition is 2117804; the starting value is even with 32 positive divisors.

Prime Factor Structure

Factorization String 2^3 × 13 × 139 × 293
Distinct Prime Factors 4
Square Status No
Abundance Measure Abundant

Analytical Properties

Total Divisors 32
Divisor Sum (σ) 8,643,600
Proper Divisor Sum 4,407,992
Digit Sum / Digital Root 28 (Root: 1)
Adjacent Primes #4235603 ← → #4235633

Radix Representation

Decimal 4235608
Binary 10000001010000101011000 (23 bits)
Octal 0o20120530
Hexadecimal 0x40A158

Divisor Catalog (32)

Collatz Trajectory (123 steps to reach 1)

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

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