λ
Ratio Atlas

28,360,988

22 × 7090247
Deficient Even Composite

28,360,988 factors as 2^2 × 7090247. Its 6 positive divisors give a proper-divisor sum of 21,270,748, so this integer is deficient. The Collatz stopping time is 330 steps.

Prime Factor Structure

Factorization String 2^2 × 7090247
Distinct Prime Factors 2
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 6
Divisor Sum (σ) 49,631,736
Proper Divisor Sum 21,270,748
Digit Sum / Digital Root 44 (Root: 8)
Adjacent Primes #28360987 ← → #28361027

Radix Representation

Decimal 28360988
Binary 1101100001100000100011100 (25 bits)
Octal 0o154140434
Hexadecimal 0x1B0C11C

Divisor Catalog (6)

Collatz Trajectory (330 steps to reach 1)

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

28,360,988 14,180,494 7,090,247 21,270,742 10,635,371 31,906,114 15,953,057 47,859,172 23,929,586 11,964,793 35,894,380 17,947,190 8,973,595 26,920,786 13,460,393 40,381,180 20,190,590 10,095,295 30,285,886 15,142,943 45,428,830 22,714,415 68,143,246 34,071,623 102,214,870 51,107,435 153,322,306 76,661,153 229,983,460 114,991,730 57,495,865 172,487,596 86,243,798 43,121,899 129,365,698 64,682,849 194,048,548 97,024,274 48,512,137 145,536,412 72,768,206 36,384,103 109,152,310 54,576,155 163,728,466 81,864,233 245,592,700 122,796,350 61,398,175 184,194,526 92,097,263 276,291,790 138,145,895 414,437,686 207,218,843 621,656,530 310,828,265 932,484,796 466,242,398 233,121,199

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