18,488,405

5 × 13 × 461 × 617

18,488,405 factors as 5 × 13 × 461 × 617. Its 16 positive divisors give a proper-divisor sum of 5,494,939, so this integer is deficient. The Collatz stopping time is 195 steps.

Prime Factor Structure

Factorization String 5 × 13 × 461 × 617

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 16

Divisor Sum (σ) 23,983,344

Proper Divisor Sum 5,494,939

Digit Sum / Digital Root 38 (Root: 2)

Adjacent Primes #18488381 ← → #18488413

Radix Representation

Decimal	18488405
Binary	1000110100001110001010101 (25 bits)
Octal	0o106416125
Hexadecimal	0x11A1C55

Divisor Catalog (16)

1 5 13 65 461 617 2,305 3,085 5,993 8,021 29,965 40,105 284,437 1,422,185 3,697,681 18,488,405

Collatz Trajectory (195 steps to reach 1)

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

18,488,405 55,465,216 27,732,608 13,866,304 6,933,152 3,466,576 1,733,288 866,644 433,322 216,661 649,984 324,992 162,496 81,248 40,624 20,312 10,156 5,078 2,539 7,618 3,809 11,428 5,714 2,857 8,572 4,286 2,143 6,430 3,215 9,646 4,823 14,470 7,235 21,706 10,853 32,560 16,280 8,140 4,070 2,035 6,106 3,053 9,160 4,580 2,290 1,145 3,436 1,718 859 2,578 1,289 3,868 1,934 967 2,902 1,451 4,354 2,177 6,532 3,266

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