4,015,870

2 × 5 × 401587

Starting at 4,015,870, the Collatz iteration reaches 1 after 92 steps. The first transition is 2007935; the starting value is even with 8 positive divisors.

Prime Factor Structure

Factorization String 2 × 5 × 401587

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 8

Divisor Sum (σ) 7,228,584

Proper Divisor Sum 3,212,714

Digit Sum / Digital Root 25 (Root: 7)

Adjacent Primes #4015841 ← → #4015873

Radix Representation

Decimal	4015870
Binary	1111010100011011111110 (22 bits)
Octal	0o17243376
Hexadecimal	0x3D46FE

Divisor Catalog (8)

1 2 5 10 401,587 803,174 2,007,935 4,015,870

Collatz Trajectory (92 steps to reach 1)

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

4,015,870 2,007,935 6,023,806 3,011,903 9,035,710 4,517,855 13,553,566 6,776,783 20,330,350 10,165,175 30,495,526 15,247,763 45,743,290 22,871,645 68,614,936 34,307,468 17,153,734 8,576,867 25,730,602 12,865,301 38,595,904 19,297,952 9,648,976 4,824,488 2,412,244 1,206,122 603,061 1,809,184 904,592 452,296 226,148 113,074 56,537 169,612 84,806 42,403 127,210 63,605 190,816 95,408 47,704 23,852 11,926 5,963 17,890 8,945 26,836 13,418 6,709 20,128 10,064 5,032 2,516 1,258 629 1,888 944 472 236 118

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