2 × 5² × 12889

Prime Factor Structure

Factorization String 2 × 5^2 × 12889

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 12

Divisor Sum (σ) 1,198,770

Proper Divisor Sum 554,320

Digit Sum / Digital Root 23 (Root: 5)

Adjacent Primes #644447 ← → #644489

1 2 5 10 25 50 12,889 25,778 64,445 128,890 322,225 644,450

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

644,450 322,225 966,676 483,338 241,669 725,008 362,504 181,252 90,626 45,313 135,940 67,970 33,985 101,956 50,978 25,489 76,468 38,234 19,117 57,352 28,676 14,338 7,169 21,508 10,754 5,377 16,132 8,066 4,033 12,100 6,050 3,025 9,076 4,538 2,269 6,808 3,404 1,702 851 2,554 1,277 3,832 1,916 958 479 1,438 719 2,158 1,079 3,238 1,619 4,858 2,429 7,288 3,644 1,822 911 2,734 1,367 4,102

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