21,865
5 × 4373
Deficient
Odd
Composite
Prime Factor Structure
Factorization String
5 × 4373
Distinct Prime Factors
2
Square Status
No
Abundance Measure
Deficient
Analytical Properties
Total Divisors
4
Divisor Sum (σ)
26,244
Proper Divisor Sum
4,379
Digit Sum / Digital Root
22 (Root: 4)
Radix Representation
| Decimal | 21865 |
| Binary | 101010101101001 (15 bits) |
| Octal | 0o52551 |
| Hexadecimal | 0x5569 |
Divisor Catalog (4)
Collatz Trajectory (118 steps to reach 1)
Iterative sequence n → n/2 (if even) or 3n+1 (if odd):
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