18,000,836

2² × 7² × 91841

18,000,836 factors as 2^2 × 7^2 × 91841. Its 18 positive divisors give a proper-divisor sum of 18,644,122, so this integer is abundant. The Collatz stopping time is 151 steps.

Prime Factor Structure

Factorization String 2^2 × 7^2 × 91841

Distinct Prime Factors 3

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 18

Divisor Sum (σ) 36,644,958

Proper Divisor Sum 18,644,122

Digit Sum / Digital Root 26 (Root: 8)

Adjacent Primes #18000821 ← → #18000869

Radix Representation

Decimal	18000836
Binary	1000100101010101111000100 (25 bits)
Octal	0o104525704
Hexadecimal	0x112ABC4

Divisor Catalog (18)

1 2 4 7 14 28 49 98 196 91,841 183,682 367,364 642,887 1,285,774 2,571,548 4,500,209 9,000,418 18,000,836

Collatz Trajectory (151 steps to reach 1)

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

18,000,836 9,000,418 4,500,209 13,500,628 6,750,314 3,375,157 10,125,472 5,062,736 2,531,368 1,265,684 632,842 316,421 949,264 474,632 237,316 118,658 59,329 177,988 88,994 44,497 133,492 66,746 33,373 100,120 50,060 25,030 12,515 37,546 18,773 56,320 28,160 14,080 7,040 3,520 1,760 880 440 220 110 55 166 83 250 125 376 188 94 47 142 71 214 107 322 161 484 242 121 364 182 91

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