1,217,646

2 × 3³ × 22549

1,217,646 factors as 2 × 3^3 × 22549. Its 16 positive divisors give a proper-divisor sum of 1,488,354, so this integer is abundant. The Collatz stopping time is 173 steps.

Prime Factor Structure

Factorization String 2 × 3^3 × 22549

Distinct Prime Factors 3

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 16

Divisor Sum (σ) 2,706,000

Proper Divisor Sum 1,488,354

Digit Sum / Digital Root 27 (Root: 9)

Adjacent Primes #1217617 ← → #1217647

Radix Representation

Decimal	1217646
Binary	100101001010001101110 (21 bits)
Octal	0o4512156
Hexadecimal	0x12946E

Divisor Catalog (16)

1 2 3 6 9 18 27 54 22,549 45,098 67,647 135,294 202,941 405,882 608,823 1,217,646

Collatz Trajectory (173 steps to reach 1)

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

1,217,646 608,823 1,826,470 913,235 2,739,706 1,369,853 4,109,560 2,054,780 1,027,390 513,695 1,541,086 770,543 2,311,630 1,155,815 3,467,446 1,733,723 5,201,170 2,600,585 7,801,756 3,900,878 1,950,439 5,851,318 2,925,659 8,776,978 4,388,489 13,165,468 6,582,734 3,291,367 9,874,102 4,937,051 14,811,154 7,405,577 22,216,732 11,108,366 5,554,183 16,662,550 8,331,275 24,993,826 12,496,913 37,490,740 18,745,370 9,372,685 28,118,056 14,059,028 7,029,514 3,514,757 10,544,272 5,272,136 2,636,068 1,318,034 659,017 1,977,052 988,526 494,263 1,482,790 741,395 2,224,186 1,112,093 3,336,280 1,668,140

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