215,860

2² × 5 × 43 × 251

215,860 has the prime decomposition 2^2 × 5 × 43 × 251. Its 4 distinct prime factors produce 24 positive divisors.

Prime Factor Structure

Factorization String 2^2 × 5 × 43 × 251

Distinct Prime Factors 4

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 24

Divisor Sum (σ) 465,696

Proper Divisor Sum 249,836

Digit Sum / Digital Root 22 (Root: 4)

Adjacent Primes #215857 ← → #215863

Radix Representation

Decimal	215860
Binary	110100101100110100 (18 bits)
Octal	0o645464
Hexadecimal	0x34B34

Divisor Catalog (24)

1 2 4 5 10 20 43 86 172 215 251 430 502 860 1,004 1,255 2,510 5,020 10,793 21,586 43,172 53,965 107,930 215,860

Collatz Trajectory (80 steps to reach 1)

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

215,860 107,930 53,965 161,896 80,948 40,474 20,237 60,712 30,356 15,178 7,589 22,768 11,384 5,692 2,846 1,423 4,270 2,135 6,406 3,203 9,610 4,805 14,416 7,208 3,604 1,802 901 2,704 1,352 676 338 169 508 254 127 382 191 574 287 862 431 1,294 647 1,942 971 2,914 1,457 4,372 2,186 1,093 3,280 1,640 820 410 205 616 308 154 77 232

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