2,198,558

2 × 1099279

2,198,558 factors as 2 × 1099279. Its 4 positive divisors give a proper-divisor sum of 1,099,282, so this integer is deficient. The Collatz stopping time is 210 steps.

Prime Factor Structure

Factorization String 2 × 1099279

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 4

Divisor Sum (σ) 3,297,840

Proper Divisor Sum 1,099,282

Digit Sum / Digital Root 38 (Root: 2)

Adjacent Primes #2198533 ← → #2198569

Radix Representation

Decimal	2198558
Binary	1000011000110000011110 (22 bits)
Octal	0o10306036
Hexadecimal	0x218C1E

Divisor Catalog (4)

1 2 1,099,279 2,198,558

Collatz Trajectory (210 steps to reach 1)

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

2,198,558 1,099,279 3,297,838 1,648,919 4,946,758 2,473,379 7,420,138 3,710,069 11,130,208 5,565,104 2,782,552 1,391,276 695,638 347,819 1,043,458 521,729 1,565,188 782,594 391,297 1,173,892 586,946 293,473 880,420 440,210 220,105 660,316 330,158 165,079 495,238 247,619 742,858 371,429 1,114,288 557,144 278,572 139,286 69,643 208,930 104,465 313,396 156,698 78,349 235,048 117,524 58,762 29,381 88,144 44,072 22,036 11,018 5,509 16,528 8,264 4,132 2,066 1,033 3,100 1,550 775 2,326

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