λ
Ratio Atlas

18,299,987

677 × 27031
Deficient Odd Composite

18,299,987 factors as 677 × 27031. Its 4 positive divisors give a proper-divisor sum of 27,709, so this integer is deficient. The Collatz stopping time is 350 steps.

Prime Factor Structure

Factorization String 677 × 27031
Distinct Prime Factors 2
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 4
Divisor Sum (σ) 18,327,696
Proper Divisor Sum 27,709
Digit Sum / Digital Root 53 (Root: 8)
Adjacent Primes #18299977 ← → #18299993

Radix Representation

Decimal 18299987
Binary 1000101110011110001010011 (25 bits)
Octal 0o105636123
Hexadecimal 0x1173C53

Divisor Catalog (4)

Collatz Trajectory (350 steps to reach 1)

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

18,299,987 54,899,962 27,449,981 82,349,944 41,174,972 20,587,486 10,293,743 30,881,230 15,440,615 46,321,846 23,160,923 69,482,770 34,741,385 104,224,156 52,112,078 26,056,039 78,168,118 39,084,059 117,252,178 58,626,089 175,878,268 87,939,134 43,969,567 131,908,702 65,954,351 197,863,054 98,931,527 296,794,582 148,397,291 445,191,874 222,595,937 667,787,812 333,893,906 166,946,953 500,840,860 250,420,430 125,210,215 375,630,646 187,815,323 563,445,970 281,722,985 845,168,956 422,584,478 211,292,239 633,876,718 316,938,359 950,815,078 475,407,539 1,426,222,618 713,111,309 2,139,333,928 1,069,666,964 534,833,482 267,416,741 802,250,224 401,125,112 200,562,556 100,281,278 50,140,639 150,421,918

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