1,390,772

2² × 271 × 1283

Starting at 1,390,772, the Collatz iteration reaches 1 after 106 steps. The first transition is 695386; the starting value is even with 12 positive divisors.

Prime Factor Structure

Factorization String 2^2 × 271 × 1283

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 12

Divisor Sum (σ) 2,444,736

Proper Divisor Sum 1,053,964

Digit Sum / Digital Root 29 (Root: 2)

Adjacent Primes #1390771 ← → #1390783

Radix Representation

Decimal	1390772
Binary	101010011100010110100 (21 bits)
Octal	0o5234264
Hexadecimal	0x1538B4

Divisor Catalog (12)

1 2 4 271 542 1,084 1,283 2,566 5,132 347,693 695,386 1,390,772

Collatz Trajectory (106 steps to reach 1)

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

1,390,772 695,386 347,693 1,043,080 521,540 260,770 130,385 391,156 195,578 97,789 293,368 146,684 73,342 36,671 110,014 55,007 165,022 82,511 247,534 123,767 371,302 185,651 556,954 278,477 835,432 417,716 208,858 104,429 313,288 156,644 78,322 39,161 117,484 58,742 29,371 88,114 44,057 132,172 66,086 33,043 99,130 49,565 148,696 74,348 37,174 18,587 55,762 27,881 83,644 41,822 20,911 62,734 31,367 94,102 47,051 141,154 70,577 211,732 105,866 52,933

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