1,998,065

5 × 399613

1,998,065 factors as 5 × 399613. Its 4 positive divisors give a proper-divisor sum of 399,619, so this integer is deficient. The Collatz stopping time is 140 steps.

Prime Factor Structure

Factorization String 5 × 399613

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 4

Divisor Sum (σ) 2,397,684

Proper Divisor Sum 399,619

Digit Sum / Digital Root 38 (Root: 2)

Adjacent Primes #1998049 ← → #1998067

Radix Representation

Decimal	1998065
Binary	111100111110011110001 (21 bits)
Octal	0o7476361
Hexadecimal	0x1E7CF1

Divisor Catalog (4)

1 5 399,613 1,998,065

Collatz Trajectory (140 steps to reach 1)

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

1,998,065 5,994,196 2,997,098 1,498,549 4,495,648 2,247,824 1,123,912 561,956 280,978 140,489 421,468 210,734 105,367 316,102 158,051 474,154 237,077 711,232 355,616 177,808 88,904 44,452 22,226 11,113 33,340 16,670 8,335 25,006 12,503 37,510 18,755 56,266 28,133 84,400 42,200 21,100 10,550 5,275 15,826 7,913 23,740 11,870 5,935 17,806 8,903 26,710 13,355 40,066 20,033 60,100 30,050 15,025 45,076 22,538 11,269 33,808 16,904 8,452 4,226 2,113

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