2,218,394

2 × 1109197

Starting at 2,218,394, the Collatz iteration reaches 1 after 179 steps. The first transition is 1109197; the starting value is even with 4 positive divisors.

Prime Factor Structure

Factorization String 2 × 1109197

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 4

Divisor Sum (σ) 3,327,594

Proper Divisor Sum 1,109,200

Digit Sum / Digital Root 29 (Root: 2)

Adjacent Primes #2218367 ← → #2218423

Radix Representation

Decimal	2218394
Binary	1000011101100110011010 (22 bits)
Octal	0o10354632
Hexadecimal	0x21D99A

Divisor Catalog (4)

1 2 1,109,197 2,218,394

Collatz Trajectory (179 steps to reach 1)

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

2,218,394 1,109,197 3,327,592 1,663,796 831,898 415,949 1,247,848 623,924 311,962 155,981 467,944 233,972 116,986 58,493 175,480 87,740 43,870 21,935 65,806 32,903 98,710 49,355 148,066 74,033 222,100 111,050 55,525 166,576 83,288 41,644 20,822 10,411 31,234 15,617 46,852 23,426 11,713 35,140 17,570 8,785 26,356 13,178 6,589 19,768 9,884 4,942 2,471 7,414 3,707 11,122 5,561 16,684 8,342 4,171 12,514 6,257 18,772 9,386 4,693 14,080

← Previous Integer #2,218,393 Browse Full Index Next Integer #2,218,395 →