4,073,750

2 × 5⁴ × 3259

Starting at 4,073,750, the Collatz iteration reaches 1 after 216 steps. The first transition is 2036875; the starting value is even with 20 positive divisors.

Prime Factor Structure

Factorization String 2 × 5^4 × 3259

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 20

Divisor Sum (σ) 7,638,180

Proper Divisor Sum 3,564,430

Digit Sum / Digital Root 26 (Root: 8)

Adjacent Primes #4073749 ← → #4073791

Radix Representation

Decimal	4073750
Binary	1111100010100100010110 (22 bits)
Octal	0o17424426
Hexadecimal	0x3E2916

Divisor Catalog (20)

Collatz Trajectory (216 steps to reach 1)

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

4,073,750 2,036,875 6,110,626 3,055,313 9,165,940 4,582,970 2,291,485 6,874,456 3,437,228 1,718,614 859,307 2,577,922 1,288,961 3,866,884 1,933,442 966,721 2,900,164 1,450,082 725,041 2,175,124 1,087,562 543,781 1,631,344 815,672 407,836 203,918 101,959 305,878 152,939 458,818 229,409 688,228 344,114 172,057 516,172 258,086 129,043 387,130 193,565 580,696 290,348 145,174 72,587 217,762 108,881 326,644 163,322 81,661 244,984 122,492 61,246 30,623 91,870 45,935 137,806 68,903 206,710 103,355 310,066 155,033

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