18,724,121

13 × 1440317

18,724,121 factors as 13 × 1440317. Its 4 positive divisors give a proper-divisor sum of 1,440,331, so this integer is deficient. The Collatz stopping time is 208 steps.

Prime Factor Structure

Factorization String 13 × 1440317

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 4

Divisor Sum (σ) 20,164,452

Proper Divisor Sum 1,440,331

Digit Sum / Digital Root 26 (Root: 8)

Adjacent Primes #18724117 ← → #18724127

Radix Representation

Decimal	18724121
Binary	1000111011011010100011001 (25 bits)
Octal	0o107332431
Hexadecimal	0x11DB519

Divisor Catalog (4)

1 13 1,440,317 18,724,121

Collatz Trajectory (208 steps to reach 1)

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

18,724,121 56,172,364 28,086,182 14,043,091 42,129,274 21,064,637 63,193,912 31,596,956 15,798,478 7,899,239 23,697,718 11,848,859 35,546,578 17,773,289 53,319,868 26,659,934 13,329,967 39,989,902 19,994,951 59,984,854 29,992,427 89,977,282 44,988,641 134,965,924 67,482,962 33,741,481 101,224,444 50,612,222 25,306,111 75,918,334 37,959,167 113,877,502 56,938,751 170,816,254 85,408,127 256,224,382 128,112,191 384,336,574 192,168,287 576,504,862 288,252,431 864,757,294 432,378,647 1,297,135,942 648,567,971 1,945,703,914 972,851,957 2,918,555,872 1,459,277,936 729,638,968 364,819,484 182,409,742 91,204,871 273,614,614 136,807,307 410,421,922 205,210,961 615,632,884 307,816,442 153,908,221

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