7,148,620

2² × 5 × 357431

Starting at 7,148,620, the Collatz iteration reaches 1 after 191 steps. The first transition is 3574310; the starting value is even with 12 positive divisors.

Prime Factor Structure

Factorization String 2^2 × 5 × 357431

Distinct Prime Factors 3

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 12

Divisor Sum (σ) 15,012,144

Proper Divisor Sum 7,863,524

Digit Sum / Digital Root 28 (Root: 1)

Adjacent Primes #7148611 ← → #7148629

Radix Representation

Decimal	7148620
Binary	11011010001010001001100 (23 bits)
Octal	0o33212114
Hexadecimal	0x6D144C

Divisor Catalog (12)

1 2 4 5 10 20 357,431 714,862 1,429,724 1,787,155 3,574,310 7,148,620

Collatz Trajectory (191 steps to reach 1)

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

7,148,620 3,574,310 1,787,155 5,361,466 2,680,733 8,042,200 4,021,100 2,010,550 1,005,275 3,015,826 1,507,913 4,523,740 2,261,870 1,130,935 3,392,806 1,696,403 5,089,210 2,544,605 7,633,816 3,816,908 1,908,454 954,227 2,862,682 1,431,341 4,294,024 2,147,012 1,073,506 536,753 1,610,260 805,130 402,565 1,207,696 603,848 301,924 150,962 75,481 226,444 113,222 56,611 169,834 84,917 254,752 127,376 63,688 31,844 15,922 7,961 23,884 11,942 5,971 17,914 8,957 26,872 13,436 6,718 3,359 10,078 5,039 15,118 7,559

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