390,618

2 × 3² × 21701

Prime Factor Structure

Factorization String 2 × 3^2 × 21701

Distinct Prime Factors 3

Square Status No

Abundance Measure Abundant

Total Divisors 12

Divisor Sum (σ) 846,378

Proper Divisor Sum 455,760

Digit Sum / Digital Root 27 (Root: 9)

Adjacent Primes #390581 ← → #390647

1 2 3 6 9 18 21,701 43,402 65,103 130,206 195,309 390,618

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

390,618 195,309 585,928 292,964 146,482 73,241 219,724 109,862 54,931 164,794 82,397 247,192 123,596 61,798 30,899 92,698 46,349 139,048 69,524 34,762 17,381 52,144 26,072 13,036 6,518 3,259 9,778 4,889 14,668 7,334 3,667 11,002 5,501 16,504 8,252 4,126 2,063 6,190 3,095 9,286 4,643 13,930 6,965 20,896 10,448 5,224 2,612 1,306 653 1,960 980 490 245 736 368 184 92 46 23 70

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