λ
Sequence Observatory

2,219,068

22 × 554767
Deficient Even Composite

Starting at 2,219,068, the Collatz iteration reaches 1 after 135 steps. The first transition is 1109534; the starting value is even with 6 positive divisors.

Prime Factor Structure

Factorization String 2^2 × 554767
Distinct Prime Factors 2
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 6
Divisor Sum (σ) 3,883,376
Proper Divisor Sum 1,664,308
Digit Sum / Digital Root 28 (Root: 1)
Adjacent Primes #2219059 ← → #2219081

Radix Representation

Decimal 2219068
Binary 1000011101110000111100 (22 bits)
Octal 0o10356074
Hexadecimal 0x21DC3C

Divisor Catalog (6)

1 2 4 554,767 1,109,534 2,219,068

Collatz Trajectory (135 steps to reach 1)

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

2,219,068 1,109,534 554,767 1,664,302 832,151 2,496,454 1,248,227 3,744,682 1,872,341 5,617,024 2,808,512 1,404,256 702,128 351,064 175,532 87,766 43,883 131,650 65,825 197,476 98,738 49,369 148,108 74,054 37,027 111,082 55,541 166,624 83,312 41,656 20,828 10,414 5,207 15,622 7,811 23,434 11,717 35,152 17,576 8,788 4,394 2,197 6,592 3,296 1,648 824 412 206 103 310 155 466 233 700 350 175 526 263 790 395

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