28,958,225

5² × 17 × 61 × 1117

28,958,225 factors as 5^2 × 17 × 61 × 1117. Its 24 positive divisors give a proper-divisor sum of 9,720,103, so this integer is deficient. The Collatz stopping time is 144 steps.

Prime Factor Structure

Factorization String 5^2 × 17 × 61 × 1117

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 24

Divisor Sum (σ) 38,678,328

Proper Divisor Sum 9,720,103

Digit Sum / Digital Root 41 (Root: 5)

Adjacent Primes #28958201 ← → #28958227

Radix Representation

Decimal	28958225
Binary	1101110011101111000010001 (25 bits)
Octal	0o156357021
Hexadecimal	0x1B9DE11

Divisor Catalog (24)

Collatz Trajectory (144 steps to reach 1)

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

28,958,225 86,874,676 43,437,338 21,718,669 65,156,008 32,578,004 16,289,002 8,144,501 24,433,504 12,216,752 6,108,376 3,054,188 1,527,094 763,547 2,290,642 1,145,321 3,435,964 1,717,982 858,991 2,576,974 1,288,487 3,865,462 1,932,731 5,798,194 2,899,097 8,697,292 4,348,646 2,174,323 6,522,970 3,261,485 9,784,456 4,892,228 2,446,114 1,223,057 3,669,172 1,834,586 917,293 2,751,880 1,375,940 687,970 343,985 1,031,956 515,978 257,989 773,968 386,984 193,492 96,746 48,373 145,120 72,560 36,280 18,140 9,070 4,535 13,606 6,803 20,410 10,205 30,616

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