438,501

3 × 7² × 19 × 157

Prime Factor Structure

Factorization String 3 × 7^2 × 19 × 157

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Total Divisors 24

Divisor Sum (σ) 720,480

Proper Divisor Sum 281,979

Digit Sum / Digital Root 21 (Root: 3)

Adjacent Primes #438499 ← → #438517

1 3 7 19 21 49 57 133 147 157 399 471 931 1,099 2,793 2,983 3,297 7,693 8,949 20,881 23,079 62,643 146,167 438,501

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

438,501 1,315,504 657,752 328,876 164,438 82,219 246,658 123,329 369,988 184,994 92,497 277,492 138,746 69,373 208,120 104,060 52,030 26,015 78,046 39,023 117,070 58,535 175,606 87,803 263,410 131,705 395,116 197,558 98,779 296,338 148,169 444,508 222,254 111,127 333,382 166,691 500,074 250,037 750,112 375,056 187,528 93,764 46,882 23,441 70,324 35,162 17,581 52,744 26,372 13,186 6,593 19,780 9,890 4,945 14,836 7,418 3,709 11,128 5,564 2,782

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