λ
Sequence Observatory

7,028,874

2 × 32 × 390493
Abundant Even Composite

Starting at 7,028,874, the Collatz iteration reaches 1 after 129 steps. The first transition is 3514437; the starting value is even with 12 positive divisors.

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Prime Factor Structure

Factorization String 2 × 3^2 × 390493
Distinct Prime Factors 3
Square Status No
Abundance Measure Abundant

Analytical Properties

Total Divisors 12
Divisor Sum (σ) 15,229,266
Proper Divisor Sum 8,200,392
Digit Sum / Digital Root 36 (Root: 9)
Adjacent Primes #7028873 ← → #7028881

Radix Representation

Decimal 7028874
Binary 11010110100000010001010 (23 bits)
Octal 0o32640212
Hexadecimal 0x6B408A

Divisor Catalog (5 of 12)

1 2 3 6 9

Collatz Trajectory (129 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.

7,028,874 3,514,437 10,543,312 5,271,656 2,635,828

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