1,998,115

5 × 7 × 57089

1,998,115 factors as 5 × 7 × 57089. Its 8 positive divisors give a proper-divisor sum of 742,205, so this integer is deficient. The Collatz stopping time is 140 steps.

Prime Factor Structure

Factorization String 5 × 7 × 57089

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 8

Divisor Sum (σ) 2,740,320

Proper Divisor Sum 742,205

Digit Sum / Digital Root 34 (Root: 7)

Adjacent Primes #1998109 ← → #1998119

Radix Representation

Decimal	1998115
Binary	111100111110100100011 (21 bits)
Octal	0o7476443
Hexadecimal	0x1E7D23

Divisor Catalog (8)

1 5 7 35 57,089 285,445 399,623 1,998,115

Collatz Trajectory (140 steps to reach 1)

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

1,998,115 5,994,346 2,997,173 8,991,520 4,495,760 2,247,880 1,123,940 561,970 280,985 842,956 421,478 210,739 632,218 316,109 948,328 474,164 237,082 118,541 355,624 177,812 88,906 44,453 133,360 66,680 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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