1,428,521

1428521

1,428,521 factors as 1428521. Its 2 positive divisors give a proper-divisor sum of 1, so this integer is deficient. The Collatz stopping time is 124 steps.

Prime Factor Structure

Factorization String 1428521

Distinct Prime Factors 1

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 2

Divisor Sum (σ) 1,428,522

Proper Divisor Sum 1

Digit Sum / Digital Root 23 (Root: 5)

Adjacent Primes #1428491 ← → #1428529

Radix Representation

Decimal	1428521
Binary	101011100110000101001 (21 bits)
Octal	0o5346051
Hexadecimal	0x15CC29

Divisor Catalog (2)

1 1,428,521

Collatz Trajectory (124 steps to reach 1)

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

1,428,521 4,285,564 2,142,782 1,071,391 3,214,174 1,607,087 4,821,262 2,410,631 7,231,894 3,615,947 10,847,842 5,423,921 16,271,764 8,135,882 4,067,941 12,203,824 6,101,912 3,050,956 1,525,478 762,739 2,288,218 1,144,109 3,432,328 1,716,164 858,082 429,041 1,287,124 643,562 321,781 965,344 482,672 241,336 120,668 60,334 30,167 90,502 45,251 135,754 67,877 203,632 101,816 50,908 25,454 12,727 38,182 19,091 57,274 28,637 85,912 42,956 21,478 10,739 32,218 16,109 48,328 24,164 12,082 6,041 18,124 9,062

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