2,178,241

13² × 12889

2,178,241 factors as 13^2 × 12889. Its 6 positive divisors give a proper-divisor sum of 180,629, so this integer is deficient. The Collatz stopping time is 91 steps.

Prime Factor Structure

Factorization String 13^2 × 12889

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 6

Divisor Sum (σ) 2,358,870

Proper Divisor Sum 180,629

Digit Sum / Digital Root 25 (Root: 7)

Adjacent Primes #2178223 ← → #2178257

Radix Representation

Decimal	2178241
Binary	1000010011110011000001 (22 bits)
Octal	0o10236301
Hexadecimal	0x213CC1

Divisor Catalog (6)

1 13 169 12,889 167,557 2,178,241

Collatz Trajectory (91 steps to reach 1)

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

2,178,241 6,534,724 3,267,362 1,633,681 4,901,044 2,450,522 1,225,261 3,675,784 1,837,892 918,946 459,473 1,378,420 689,210 344,605 1,033,816 516,908 258,454 129,227 387,682 193,841 581,524 290,762 145,381 436,144 218,072 109,036 54,518 27,259 81,778 40,889 122,668 61,334 30,667 92,002 46,001 138,004 69,002 34,501 103,504 51,752 25,876 12,938 6,469 19,408 9,704 4,852 2,426 1,213 3,640 1,820 910 455 1,366 683 2,050 1,025 3,076 1,538 769 2,308

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