15,408,980

2² × 5 × 770449

15,408,980 factors as 2^2 × 5 × 770449. Its 12 positive divisors give a proper-divisor sum of 16,949,920, so this integer is abundant. The Collatz stopping time is 125 steps.

Prime Factor Structure

Factorization String 2^2 × 5 × 770449

Distinct Prime Factors 3

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 12

Divisor Sum (σ) 32,358,900

Proper Divisor Sum 16,949,920

Digit Sum / Digital Root 35 (Root: 8)

Adjacent Primes #15408979 ← → #15409001

Radix Representation

Decimal	15408980
Binary	111010110001111101010100 (24 bits)
Octal	0o72617524
Hexadecimal	0xEB1F54

Divisor Catalog (12)

1 2 4 5 10 20 770,449 1,540,898 3,081,796 3,852,245 7,704,490 15,408,980

Collatz Trajectory (125 steps to reach 1)

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

15,408,980 7,704,490 3,852,245 11,556,736 5,778,368 2,889,184 1,444,592 722,296 361,148 180,574 90,287 270,862 135,431 406,294 203,147 609,442 304,721 914,164 457,082 228,541 685,624 342,812 171,406 85,703 257,110 128,555 385,666 192,833 578,500 289,250 144,625 433,876 216,938 108,469 325,408 162,704 81,352 40,676 20,338 10,169 30,508 15,254 7,627 22,882 11,441 34,324 17,162 8,581 25,744 12,872 6,436 3,218 1,609 4,828 2,414 1,207 3,622 1,811 5,434 2,717

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