λ
Sequence Observatory

1,569,674

2 × 784837
Deficient Even Composite

Starting at 1,569,674, the Collatz iteration reaches 1 after 163 steps. The first transition is 784837; the starting value is even with 4 positive divisors.

Prime Factor Structure

Factorization String 2 × 784837
Distinct Prime Factors 2
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 4
Divisor Sum (σ) 2,354,514
Proper Divisor Sum 784,840
Digit Sum / Digital Root 38 (Root: 2)
Adjacent Primes #1569649 ← → #1569677

Radix Representation

Decimal 1569674
Binary 101111111001110001010 (21 bits)
Octal 0o5771612
Hexadecimal 0x17F38A

Divisor Catalog (4)

1 2 784,837 1,569,674

Collatz Trajectory (163 steps to reach 1)

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

1,569,674 784,837 2,354,512 1,177,256 588,628 294,314 147,157 441,472 220,736 110,368 55,184 27,592 13,796 6,898 3,449 10,348 5,174 2,587 7,762 3,881 11,644 5,822 2,911 8,734 4,367 13,102 6,551 19,654 9,827 29,482 14,741 44,224 22,112 11,056 5,528 2,764 1,382 691 2,074 1,037 3,112 1,556 778 389 1,168 584 292 146 73 220 110 55 166 83 250 125 376 188 94 47

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