λ
Sigma Notebook

1,623,572

22 × 405893
Deficient Even Composite

1,623,572 is even and not a perfect square. Its factorization is 2^2 × 405893 and its 6 divisors sum to 2,841,258.

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Prime Factor Structure

Factorization String 2^2 × 405893
Distinct Prime Factors 2
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 6
Divisor Sum (σ) 2,841,258
Proper Divisor Sum 1,217,686
Digit Sum / Digital Root 26 (Root: 8)
Adjacent Primes #1623553 ← → #1623599

Radix Representation

Decimal 1623572
Binary 110001100011000010100 (21 bits)
Octal 0o6143024
Hexadecimal 0x18C614

Divisor Catalog (5 of 6)

Collatz Trajectory (207 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.

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