1,185,680

2⁴ × 5 × 14821

Starting at 1,185,680, the Collatz iteration reaches 1 after 160 steps. The first transition is 592840; the starting value is even with 20 positive divisors.

Prime Factor Structure

Factorization String 2^4 × 5 × 14821

Distinct Prime Factors 3

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 20

Divisor Sum (σ) 2,756,892

Proper Divisor Sum 1,571,212

Digit Sum / Digital Root 29 (Root: 2)

Adjacent Primes #1185677 ← → #1185683

Radix Representation

Decimal	1185680
Binary	100100001011110010000 (21 bits)
Octal	0o4413620
Hexadecimal	0x121790

Divisor Catalog (20)

1 2 4 5 8 10 16 20 40 80 14,821 29,642 59,284 74,105 118,568 148,210 237,136 296,420 592,840 1,185,680

Collatz Trajectory (160 steps to reach 1)

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

1,185,680 592,840 296,420 148,210 74,105 222,316 111,158 55,579 166,738 83,369 250,108 125,054 62,527 187,582 93,791 281,374 140,687 422,062 211,031 633,094 316,547 949,642 474,821 1,424,464 712,232 356,116 178,058 89,029 267,088 133,544 66,772 33,386 16,693 50,080 25,040 12,520 6,260 3,130 1,565 4,696 2,348 1,174 587 1,762 881 2,644 1,322 661 1,984 992 496 248 124 62 31 94 47 142 71 214

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