1,998,100

2² × 5² × 13 × 29 × 53

Prime Factor Structure

Factorization String 2^2 × 5^2 × 13 × 29 × 53

Distinct Prime Factors 5

Square Status No

Abundance Measure Abundant

Total Divisors 72

Divisor Sum (σ) 4,921,560

Proper Divisor Sum 2,923,460

Digit Sum / Digital Root 28 (Root: 1)

Adjacent Primes #1998089 ← → #1998107

1 2 4 5 10 13 20 25 26 29 50 52 53 58 65 100 106 116 130 145 212 260 265 290 325 377 530 580 650 689 725 754 1,060 1,300 1,325 1,378 1,450 1,508 1,537 1,885 2,650 2,756 2,900 3,074 3,445 3,770 5,300 6,148 6,890 7,540 7,685 9,425 13,780 15,370 17,225 18,850 19,981 30,740 34,450 37,700

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

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