2,178,129

3 × 726043

2,178,129 factors as 3 × 726043. Its 4 positive divisors give a proper-divisor sum of 726,047, so this integer is deficient. The Collatz stopping time is 179 steps.

Prime Factor Structure

Factorization String 3 × 726043

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 4

Divisor Sum (σ) 2,904,176

Proper Divisor Sum 726,047

Digit Sum / Digital Root 30 (Root: 3)

Adjacent Primes #2178083 ← → #2178131

Radix Representation

Decimal	2178129
Binary	1000010011110001010001 (22 bits)
Octal	0o10236121
Hexadecimal	0x213C51

Divisor Catalog (4)

1 3 726,043 2,178,129

Collatz Trajectory (179 steps to reach 1)

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

2,178,129 6,534,388 3,267,194 1,633,597 4,900,792 2,450,396 1,225,198 612,599 1,837,798 918,899 2,756,698 1,378,349 4,135,048 2,067,524 1,033,762 516,881 1,550,644 775,322 387,661 1,162,984 581,492 290,746 145,373 436,120 218,060 109,030 54,515 163,546 81,773 245,320 122,660 61,330 30,665 91,996 45,998 22,999 68,998 34,499 103,498 51,749 155,248 77,624 38,812 19,406 9,703 29,110 14,555 43,666 21,833 65,500 32,750 16,375 49,126 24,563 73,690 36,845 110,536 55,268 27,634 13,817

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