λ
Harmonic Matrix

280,382

2 × 140191
Deficient Even Composite

280,382 has digital root 5. The neighboring primes are 280373 and 280409; its proper-divisor sum differs from the starting integer by -140,188.

Prime Factor Structure

Factorization String 2 × 140191
Distinct Prime Factors 2
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 4
Divisor Sum (σ) 420,576
Proper Divisor Sum 140,194
Digit Sum / Digital Root 23 (Root: 5)
Adjacent Primes #280373 ← → #280409

Radix Representation

Decimal 280382
Binary 1000100011100111110 (19 bits)
Octal 0o1043476
Hexadecimal 0x4473E

Divisor Catalog (4)

1 2 140,191 280,382

Collatz Trajectory (145 steps to reach 1)

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

280,382 140,191 420,574 210,287 630,862 315,431 946,294 473,147 1,419,442 709,721 2,129,164 1,064,582 532,291 1,596,874 798,437 2,395,312 1,197,656 598,828 299,414 149,707 449,122 224,561 673,684 336,842 168,421 505,264 252,632 126,316 63,158 31,579 94,738 47,369 142,108 71,054 35,527 106,582 53,291 159,874 79,937 239,812 119,906 59,953 179,860 89,930 44,965 134,896 67,448 33,724 16,862 8,431 25,294 12,647 37,942 18,971 56,914 28,457 85,372 42,686 21,343 64,030

More profiles

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