λ
Sigma Notebook

1,987,108

22 × 23 × 21599
Deficient Even Composite

1,987,108 is even and not a perfect square. Its factorization is 2^2 × 23 × 21599 and its 12 divisors sum to 3,628,800.

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Prime Factor Structure

Factorization String 2^2 × 23 × 21599
Distinct Prime Factors 3
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 12
Divisor Sum (σ) 3,628,800
Proper Divisor Sum 1,641,692
Digit Sum / Digital Root 34 (Root: 7)
Adjacent Primes #1987099 ← → #1987121

Radix Representation

Decimal 1987108
Binary 111100101001000100100 (21 bits)
Octal 0o7451044
Hexadecimal 0x1E5224

Divisor Catalog (5 of 12)

1 2 4 23 46

Collatz Trajectory (122 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.

1,987,108 993,554 496,777 1,490,332 745,166

More profiles

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