1,287,516

2² × 3 × 19 × 5647

1,287,516 factors as 2^2 × 3 × 19 × 5647. Its 24 positive divisors give a proper-divisor sum of 1,875,364, so this integer is abundant. The Collatz stopping time is 124 steps.

Prime Factor Structure

Factorization String 2^2 × 3 × 19 × 5647

Distinct Prime Factors 4

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 24

Divisor Sum (σ) 3,162,880

Proper Divisor Sum 1,875,364

Digit Sum / Digital Root 30 (Root: 3)

Adjacent Primes #1287511 ← → #1287541

Radix Representation

Decimal	1287516
Binary	100111010010101011100 (21 bits)
Octal	0o4722534
Hexadecimal	0x13A55C

Divisor Catalog (24)

Collatz Trajectory (124 steps to reach 1)

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

1,287,516 643,758 321,879 965,638 482,819 1,448,458 724,229 2,172,688 1,086,344 543,172 271,586 135,793 407,380 203,690 101,845 305,536 152,768 76,384 38,192 19,096 9,548 4,774 2,387 7,162 3,581 10,744 5,372 2,686 1,343 4,030 2,015 6,046 3,023 9,070 4,535 13,606 6,803 20,410 10,205 30,616 15,308 7,654 3,827 11,482 5,741 17,224 8,612 4,306 2,153 6,460 3,230 1,615 4,846 2,423 7,270 3,635 10,906 5,453 16,360 8,180

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