1,787,201

13 × 137477

1,787,201 factors as 13 × 137477. Its 4 positive divisors give a proper-divisor sum of 137,491, so this integer is deficient. The Collatz stopping time is 189 steps.

Prime Factor Structure

Factorization String 13 × 137477

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 4

Divisor Sum (σ) 1,924,692

Proper Divisor Sum 137,491

Digit Sum / Digital Root 26 (Root: 8)

Adjacent Primes #1787189 ← → #1787237

Radix Representation

Decimal	1787201
Binary	110110100010101000001 (21 bits)
Octal	0o6642501
Hexadecimal	0x1B4541

Divisor Catalog (4)

1 13 137,477 1,787,201

Collatz Trajectory (189 steps to reach 1)

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

1,787,201 5,361,604 2,680,802 1,340,401 4,021,204 2,010,602 1,005,301 3,015,904 1,507,952 753,976 376,988 188,494 94,247 282,742 141,371 424,114 212,057 636,172 318,086 159,043 477,130 238,565 715,696 357,848 178,924 89,462 44,731 134,194 67,097 201,292 100,646 50,323 150,970 75,485 226,456 113,228 56,614 28,307 84,922 42,461 127,384 63,692 31,846 15,923 47,770 23,885 71,656 35,828 17,914 8,957 26,872 13,436 6,718 3,359 10,078 5,039 15,118 7,559 22,678 11,339

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