13,138,018

2 × 6569009

13,138,018 factors as 2 × 6569009. Its 4 positive divisors give a proper-divisor sum of 6,569,012, so this integer is deficient. The Collatz stopping time is 179 steps.

Prime Factor Structure

Factorization String 2 × 6569009

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 4

Divisor Sum (σ) 19,707,030

Proper Divisor Sum 6,569,012

Digit Sum / Digital Root 25 (Root: 7)

Adjacent Primes #13138007 ← → #13138019

Radix Representation

Decimal	13138018
Binary	110010000111100001100010 (24 bits)
Octal	0o62074142
Hexadecimal	0xC87862

Divisor Catalog (4)

1 2 6,569,009 13,138,018

Collatz Trajectory (179 steps to reach 1)

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

13,138,018 6,569,009 19,707,028 9,853,514 4,926,757 14,780,272 7,390,136 3,695,068 1,847,534 923,767 2,771,302 1,385,651 4,156,954 2,078,477 6,235,432 3,117,716 1,558,858 779,429 2,338,288 1,169,144 584,572 292,286 146,143 438,430 219,215 657,646 328,823 986,470 493,235 1,479,706 739,853 2,219,560 1,109,780 554,890 277,445 832,336 416,168 208,084 104,042 52,021 156,064 78,032 39,016 19,508 9,754 4,877 14,632 7,316 3,658 1,829 5,488 2,744 1,372 686 343 1,030 515 1,546 773 2,320

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