16,626,421

7 × 2375203

16,626,421 factors as 7 × 2375203. Its 4 positive divisors give a proper-divisor sum of 2,375,211, so this integer is deficient. The Collatz stopping time is 156 steps.

Prime Factor Structure

Factorization String 7 × 2375203

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 4

Divisor Sum (σ) 19,001,632

Proper Divisor Sum 2,375,211

Digit Sum / Digital Root 28 (Root: 1)

Adjacent Primes #16626403 ← → #16626427

Radix Representation

Decimal	16626421
Binary	111111011011001011110101 (24 bits)
Octal	0o77331365
Hexadecimal	0xFDB2F5

Divisor Catalog (4)

1 7 2,375,203 16,626,421

Collatz Trajectory (156 steps to reach 1)

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

16,626,421 49,879,264 24,939,632 12,469,816 6,234,908 3,117,454 1,558,727 4,676,182 2,338,091 7,014,274 3,507,137 10,521,412 5,260,706 2,630,353 7,891,060 3,945,530 1,972,765 5,918,296 2,959,148 1,479,574 739,787 2,219,362 1,109,681 3,329,044 1,664,522 832,261 2,496,784 1,248,392 624,196 312,098 156,049 468,148 234,074 117,037 351,112 175,556 87,778 43,889 131,668 65,834 32,917 98,752 49,376 24,688 12,344 6,172 3,086 1,543 4,630 2,315 6,946 3,473 10,420 5,210 2,605 7,816 3,908 1,954 977 2,932

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