15,534,988

2² × 7 × 554821

15,534,988 factors as 2^2 × 7 × 554821. Its 12 positive divisors give a proper-divisor sum of 15,535,044, so this integer is abundant. The Collatz stopping time is 187 steps.

Prime Factor Structure

Factorization String 2^2 × 7 × 554821

Distinct Prime Factors 3

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 12

Divisor Sum (σ) 31,070,032

Proper Divisor Sum 15,535,044

Digit Sum / Digital Root 43 (Root: 7)

Adjacent Primes #15534983 ← → #15535001

Radix Representation

Decimal	15534988
Binary	111011010000101110001100 (24 bits)
Octal	0o73205614
Hexadecimal	0xED0B8C

Divisor Catalog (12)

1 2 4 7 14 28 554,821 1,109,642 2,219,284 3,883,747 7,767,494 15,534,988

Collatz Trajectory (187 steps to reach 1)

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

15,534,988 7,767,494 3,883,747 11,651,242 5,825,621 17,476,864 8,738,432 4,369,216 2,184,608 1,092,304 546,152 273,076 136,538 68,269 204,808 102,404 51,202 25,601 76,804 38,402 19,201 57,604 28,802 14,401 43,204 21,602 10,801 32,404 16,202 8,101 24,304 12,152 6,076 3,038 1,519 4,558 2,279 6,838 3,419 10,258 5,129 15,388 7,694 3,847 11,542 5,771 17,314 8,657 25,972 12,986 6,493 19,480 9,740 4,870 2,435 7,306 3,653 10,960 5,480 2,740

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