391,950

2 × 3² × 5² × 13 × 67

Prime Factor Structure

Factorization String 2 × 3^2 × 5^2 × 13 × 67

Distinct Prime Factors 5

Square Status No

Abundance Measure Abundant

Total Divisors 72

Divisor Sum (σ) 1,150,968

Proper Divisor Sum 759,018

Digit Sum / Digital Root 27 (Root: 9)

Adjacent Primes #391939 ← → #391961

1 2 3 5 6 9 10 13 15 18 25 26 30 39 45 50 65 67 75 78 90 117 130 134 150 195 201 225 234 325 335 390 402 450 585 603 650 670 871 975 1,005 1,170 1,206 1,675 1,742 1,950 2,010 2,613 2,925 3,015 3,350 4,355 5,025 5,226 5,850 6,030 7,839 8,710 10,050 13,065

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

391,950 195,975 587,926 293,963 881,890 440,945 1,322,836 661,418 330,709 992,128 496,064 248,032 124,016 62,008 31,004 15,502 7,751 23,254 11,627 34,882 17,441 52,324 26,162 13,081 39,244 19,622 9,811 29,434 14,717 44,152 22,076 11,038 5,519 16,558 8,279 24,838 12,419 37,258 18,629 55,888 27,944 13,972 6,986 3,493 10,480 5,240 2,620 1,310 655 1,966 983 2,950 1,475 4,426 2,213 6,640 3,320 1,660 830 415

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