λ
Ratio Atlas

18,878,357

18878357
Deficient Odd Prime

18,878,357 factors as 18878357. Its 2 positive divisors give a proper-divisor sum of 1, so this integer is deficient. The Collatz stopping time is 301 steps.

Prime Factor Structure

Factorization String 18878357
Distinct Prime Factors 1
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 2
Divisor Sum (σ) 18,878,358
Proper Divisor Sum 1
Digit Sum / Digital Root 47 (Root: 2)
Adjacent Primes #18878329 ← → #18878383

Radix Representation

Decimal 18878357
Binary 1001000000000111110010101 (25 bits)
Octal 0o110007625
Hexadecimal 0x1200F95

Divisor Catalog (2)

Collatz Trajectory (301 steps to reach 1)

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

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