21,176
23 × 2647
Deficient
Even
Composite
21,176 has digital root 8. The neighboring primes are 21169 and 21179; its proper-divisor sum differs from the starting integer by -2,632.
Prime Factor Structure
Factorization String
2^3 × 2647
Distinct Prime Factors
2
Square Status
No
Abundance Measure
Deficient
Analytical Properties
Total Divisors
8
Divisor Sum (σ)
39,720
Proper Divisor Sum
18,544
Digit Sum / Digital Root
17 (Root: 8)
Adjacent Primes
#21169 ← → #21179
Radix Representation
| Decimal | 21176 |
| Binary | 101001010111000 (15 bits) |
| Octal | 0o51270 |
| Hexadecimal | 0x52B8 |
Divisor Catalog (8)
Collatz Trajectory (56 steps to reach 1)
Iterative sequence n → n/2 (if even) or 3n+1 (if odd):