418,509

3² × 7² × 13 × 73

Prime Factor Structure

Factorization String 3^2 × 7^2 × 13 × 73

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Total Divisors 36

Divisor Sum (σ) 767,676

Proper Divisor Sum 349,167

Digit Sum / Digital Root 27 (Root: 9)

Adjacent Primes #418493 ← → #418511

1 3 7 9 13 21 39 49 63 73 91 117 147 219 273 441 511 637 657 819 949 1,533 1,911 2,847 3,577 4,599 5,733 6,643 8,541 10,731 19,929 32,193 46,501 59,787 139,503 418,509

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

418,509 1,255,528 627,764 313,882 156,941 470,824 235,412 117,706 58,853 176,560 88,280 44,140 22,070 11,035 33,106 16,553 49,660 24,830 12,415 37,246 18,623 55,870 27,935 83,806 41,903 125,710 62,855 188,566 94,283 282,850 141,425 424,276 212,138 106,069 318,208 159,104 79,552 39,776 19,888 9,944 4,972 2,486 1,243 3,730 1,865 5,596 2,798 1,399 4,198 2,099 6,298 3,149 9,448 4,724 2,362 1,181 3,544 1,772 886 443

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