15,998,188

2² × 3999547

15,998,188 factors as 2^2 × 3999547. Its 6 positive divisors give a proper-divisor sum of 11,998,648, so this integer is deficient. The Collatz stopping time is 143 steps.

Prime Factor Structure

Factorization String 2^2 × 3999547

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 6

Divisor Sum (σ) 27,996,836

Proper Divisor Sum 11,998,648

Digit Sum / Digital Root 49 (Root: 4)

Adjacent Primes #15998161 ← → #15998197

Radix Representation

Decimal	15998188
Binary	111101000001110011101100 (24 bits)
Octal	0o75016354
Hexadecimal	0xF41CEC

Divisor Catalog (6)

1 2 4 3,999,547 7,999,094 15,998,188

Collatz Trajectory (143 steps to reach 1)

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

15,998,188 7,999,094 3,999,547 11,998,642 5,999,321 17,997,964 8,998,982 4,499,491 13,498,474 6,749,237 20,247,712 10,123,856 5,061,928 2,530,964 1,265,482 632,741 1,898,224 949,112 474,556 237,278 118,639 355,918 177,959 533,878 266,939 800,818 400,409 1,201,228 600,614 300,307 900,922 450,461 1,351,384 675,692 337,846 168,923 506,770 253,385 760,156 380,078 190,039 570,118 285,059 855,178 427,589 1,282,768 641,384 320,692 160,346 80,173 240,520 120,260 60,130 30,065 90,196 45,098 22,549 67,648 33,824 16,912

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