λ
Sequence Observatory

571,216

24 × 19 × 1879
Abundant Even Composite

Starting at 571,216, the Collatz iteration reaches 1 after 102 steps. The first transition is 285608; the starting value is even with 20 positive divisors.

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Prime Factor Structure

Factorization String 2^4 × 19 × 1879
Distinct Prime Factors 3
Square Status No
Abundance Measure Abundant

Analytical Properties

Total Divisors 20
Divisor Sum (σ) 1,165,600
Proper Divisor Sum 594,384
Digit Sum / Digital Root 22 (Root: 4)
Adjacent Primes #571211 ← → #571223

Radix Representation

Decimal 571216
Binary 10001011011101010000 (20 bits)
Octal 0o2133520
Hexadecimal 0x8B750

Divisor Catalog (5 of 20)

1 2 4 8 16

Collatz Trajectory (102 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.

571,216 285,608 142,804 71,402 35,701

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