λ
Sequence Observatory

1,608,576

27 × 3 × 59 × 71
Abundant Even Composite

Starting at 1,608,576, the Collatz iteration reaches 1 after 163 steps. The first transition is 804288; the starting value is even with 64 positive divisors.

Resources

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Prime Factor Structure

Factorization String 2^7 × 3 × 59 × 71
Distinct Prime Factors 4
Square Status No
Abundance Measure Abundant

Analytical Properties

Total Divisors 64
Divisor Sum (σ) 4,406,400
Proper Divisor Sum 2,797,824
Digit Sum / Digital Root 33 (Root: 6)
Adjacent Primes #1608571 ← → #1608577

Radix Representation

Decimal 1608576
Binary 110001000101110000000 (21 bits)
Octal 0o6105600
Hexadecimal 0x188B80

Divisor Catalog (5 of 64)

1 2 3 4 6

Collatz Trajectory (163 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.

1,608,576 804,288 402,144 201,072 100,536

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