12,577,865

5 × 2515573

12,577,865 factors as 5 × 2515573. Its 4 positive divisors give a proper-divisor sum of 2,515,579, so this integer is deficient. The Collatz stopping time is 78 steps.

Prime Factor Structure

Factorization String 5 × 2515573

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 4

Divisor Sum (σ) 15,093,444

Proper Divisor Sum 2,515,579

Digit Sum / Digital Root 41 (Root: 5)

Adjacent Primes #12577819 ← → #12577879

Radix Representation

Decimal	12577865
Binary	101111111110110001001001 (24 bits)
Octal	0o57766111
Hexadecimal	0xBFEC49

Divisor Catalog (4)

1 5 2,515,573 12,577,865

Collatz Trajectory (78 steps to reach 1)

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

12,577,865 37,733,596 18,866,798 9,433,399 28,300,198 14,150,099 42,450,298 21,225,149 63,675,448 31,837,724 15,918,862 7,959,431 23,878,294 11,939,147 35,817,442 17,908,721 53,726,164 26,863,082 13,431,541 40,294,624 20,147,312 10,073,656 5,036,828 2,518,414 1,259,207 3,777,622 1,888,811 5,666,434 2,833,217 8,499,652 4,249,826 2,124,913 6,374,740 3,187,370 1,593,685 4,781,056 2,390,528 1,195,264 597,632 298,816 149,408 74,704 37,352 18,676 9,338 4,669 14,008 7,004 3,502 1,751 5,254 2,627 7,882 3,941 11,824 5,912 2,956 1,478 739 2,218

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