λ
Sigma Notebook

6,720,405

3 × 5 × 448027
Deficient Odd Composite

6,720,405 is odd and not a perfect square. Its factorization is 3 × 5 × 448027 and its 8 divisors sum to 10,752,672.

Prime Factor Structure

Factorization String 3 × 5 × 448027
Distinct Prime Factors 3
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 8
Divisor Sum (σ) 10,752,672
Proper Divisor Sum 4,032,267
Digit Sum / Digital Root 24 (Root: 6)
Adjacent Primes #6720403 ← → #6720407

Radix Representation

Decimal 6720405
Binary 11001101000101110010101 (23 bits)
Octal 0o31505625
Hexadecimal 0x668B95

Divisor Catalog (8)

1 3 5 15 448,027 1,344,081 2,240,135 6,720,405

Collatz Trajectory (59 steps to reach 1)

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

6,720,405 20,161,216 10,080,608 5,040,304 2,520,152 1,260,076 630,038 315,019 945,058 472,529 1,417,588 708,794 354,397 1,063,192 531,596 265,798 132,899 398,698 199,349 598,048 299,024 149,512 74,756 37,378 18,689 56,068 28,034 14,017 42,052 21,026 10,513 31,540 15,770 7,885 23,656 11,828 5,914 2,957 8,872 4,436 2,218 1,109 3,328 1,664 832 416 208 104 52 26 13 40 20 10 5 16 8 4 2 1

More profiles

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