8,721,392

2⁴ × 545087

Starting at 8,721,392, the Collatz iteration reaches 1 after 212 steps. The first transition is 4360696; the starting value is even with 10 positive divisors.

Prime Factor Structure

Factorization String 2^4 × 545087

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 10

Divisor Sum (σ) 16,897,728

Proper Divisor Sum 8,176,336

Digit Sum / Digital Root 32 (Root: 5)

Adjacent Primes #8721379 ← → #8721403

Radix Representation

Decimal	8721392
Binary	100001010001001111110000 (24 bits)
Octal	0o41211760
Hexadecimal	0x8513F0

Divisor Catalog (10)

1 2 4 8 16 545,087 1,090,174 2,180,348 4,360,696 8,721,392

Collatz Trajectory (212 steps to reach 1)

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

8,721,392 4,360,696 2,180,348 1,090,174 545,087 1,635,262 817,631 2,452,894 1,226,447 3,679,342 1,839,671 5,519,014 2,759,507 8,278,522 4,139,261 12,417,784 6,208,892 3,104,446 1,552,223 4,656,670 2,328,335 6,985,006 3,492,503 10,477,510 5,238,755 15,716,266 7,858,133 23,574,400 11,787,200 5,893,600 2,946,800 1,473,400 736,700 368,350 184,175 552,526 276,263 828,790 414,395 1,243,186 621,593 1,864,780 932,390 466,195 1,398,586 699,293 2,097,880 1,048,940 524,470 262,235 786,706 393,353 1,180,060 590,030 295,015 885,046 442,523 1,327,570 663,785 1,991,356

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