λ
Sigma Notebook

1,515,290

2 × 5 × 7 × 21647
Abundant Even Composite

1,515,290 is even and not a perfect square. Its factorization is 2 × 5 × 7 × 21647 and its 16 divisors sum to 3,117,312.

Prime Factor Structure

Factorization String 2 × 5 × 7 × 21647
Distinct Prime Factors 4
Square Status No
Abundance Measure Abundant

Analytical Properties

Total Divisors 16
Divisor Sum (σ) 3,117,312
Proper Divisor Sum 1,602,022
Digit Sum / Digital Root 23 (Root: 5)
Adjacent Primes #1515281 ← → #1515313

Radix Representation

Decimal 1515290
Binary 101110001111100011010 (21 bits)
Octal 0o5617432
Hexadecimal 0x171F1A

Divisor Catalog (16)

1 2 5 7 10 14 35 70 21,647 43,294 108,235 151,529 216,470 303,058 757,645 1,515,290

Collatz Trajectory (106 steps to reach 1)

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

1,515,290 757,645 2,272,936 1,136,468 568,234 284,117 852,352 426,176 213,088 106,544 53,272 26,636 13,318 6,659 19,978 9,989 29,968 14,984 7,492 3,746 1,873 5,620 2,810 1,405 4,216 2,108 1,054 527 1,582 791 2,374 1,187 3,562 1,781 5,344 2,672 1,336 668 334 167 502 251 754 377 1,132 566 283 850 425 1,276 638 319 958 479 1,438 719 2,158 1,079 3,238 1,619

More profiles

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