2 × 5² × 31 × 257

Prime Factor Structure

Factorization String 2 × 5^2 × 31 × 257

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 24

Divisor Sum (σ) 767,808

Proper Divisor Sum 369,458

Digit Sum / Digital Root 28 (Root: 1)

Adjacent Primes #398347 ← → #398353

1 2 5 10 25 31 50 62 155 257 310 514 775 1,285 1,550 2,570 6,425 7,967 12,850 15,934 39,835 79,670 199,175 398,350

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

398,350 199,175 597,526 298,763 896,290 448,145 1,344,436 672,218 336,109 1,008,328 504,164 252,082 126,041 378,124 189,062 94,531 283,594 141,797 425,392 212,696 106,348 53,174 26,587 79,762 39,881 119,644 59,822 29,911 89,734 44,867 134,602 67,301 201,904 100,952 50,476 25,238 12,619 37,858 18,929 56,788 28,394 14,197 42,592 21,296 10,648 5,324 2,662 1,331 3,994 1,997 5,992 2,996 1,498 749 2,248 1,124 562 281 844 422

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