2² × 5 × 12689

Prime Factor Structure

Factorization String 2^2 × 5 × 12689

Distinct Prime Factors 3

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 12

Divisor Sum (σ) 532,980

Proper Divisor Sum 279,200

Digit Sum / Digital Root 25 (Root: 7)

Adjacent Primes #253777 ← → #253787

1 2 4 5 10 20 12,689 25,378 50,756 63,445 126,890 253,780

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

253,780 126,890 63,445 190,336 95,168 47,584 23,792 11,896 5,948 2,974 1,487 4,462 2,231 6,694 3,347 10,042 5,021 15,064 7,532 3,766 1,883 5,650 2,825 8,476 4,238 2,119 6,358 3,179 9,538 4,769 14,308 7,154 3,577 10,732 5,366 2,683 8,050 4,025 12,076 6,038 3,019 9,058 4,529 13,588 6,794 3,397 10,192 5,096 2,548 1,274 637 1,912 956 478 239 718 359 1,078 539 1,618

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