λ
Sigma Notebook

2,165,438

2 × 11 × 98429
Deficient Even Composite

2,165,438 is even and not a perfect square. Its factorization is 2 × 11 × 98429 and its 8 divisors sum to 3,543,480.

Prime Factor Structure

Factorization String 2 × 11 × 98429
Distinct Prime Factors 3
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 8
Divisor Sum (σ) 3,543,480
Proper Divisor Sum 1,378,042
Digit Sum / Digital Root 29 (Root: 2)
Adjacent Primes #2165413 ← → #2165453

Radix Representation

Decimal 2165438
Binary 1000010000101010111110 (22 bits)
Octal 0o10205276
Hexadecimal 0x210ABE

Divisor Catalog (8)

1 2 11 22 98,429 196,858 1,082,719 2,165,438

Collatz Trajectory (166 steps to reach 1)

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

2,165,438 1,082,719 3,248,158 1,624,079 4,872,238 2,436,119 7,308,358 3,654,179 10,962,538 5,481,269 16,443,808 8,221,904 4,110,952 2,055,476 1,027,738 513,869 1,541,608 770,804 385,402 192,701 578,104 289,052 144,526 72,263 216,790 108,395 325,186 162,593 487,780 243,890 121,945 365,836 182,918 91,459 274,378 137,189 411,568 205,784 102,892 51,446 25,723 77,170 38,585 115,756 57,878 28,939 86,818 43,409 130,228 65,114 32,557 97,672 48,836 24,418 12,209 36,628 18,314 9,157 27,472 13,736

More profiles

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