3² × 7 × 47 × 137

Prime Factor Structure

Factorization String 3^2 × 7 × 47 × 137

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 24

Divisor Sum (σ) 688,896

Proper Divisor Sum 283,239

Digit Sum / Digital Root 27 (Root: 9)

Adjacent Primes #405641 ← → #405659

1 3 7 9 21 47 63 137 141 329 411 423 959 987 1,233 2,877 2,961 6,439 8,631 19,317 45,073 57,951 135,219 405,657

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

405,657 1,216,972 608,486 304,243 912,730 456,365 1,369,096 684,548 342,274 171,137 513,412 256,706 128,353 385,060 192,530 96,265 288,796 144,398 72,199 216,598 108,299 324,898 162,449 487,348 243,674 121,837 365,512 182,756 91,378 45,689 137,068 68,534 34,267 102,802 51,401 154,204 77,102 38,551 115,654 57,827 173,482 86,741 260,224 130,112 65,056 32,528 16,264 8,132 4,066 2,033 6,100 3,050 1,525 4,576 2,288 1,144 572 286 143 430

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