15,420,986

2 × 7² × 53 × 2969

15,420,986 factors as 2 × 7^2 × 53 × 2969. Its 24 positive divisors give a proper-divisor sum of 12,003,994, so this integer is deficient. The Collatz stopping time is 187 steps.

Prime Factor Structure

Factorization String 2 × 7^2 × 53 × 2969

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 24

Divisor Sum (σ) 27,424,980

Proper Divisor Sum 12,003,994

Digit Sum / Digital Root 35 (Root: 8)

Adjacent Primes #15420967 ← → #15420991

Radix Representation

Decimal	15420986
Binary	111010110100111000111010 (24 bits)
Octal	0o72647072
Hexadecimal	0xEB4E3A

Divisor Catalog (24)

Collatz Trajectory (187 steps to reach 1)

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

15,420,986 7,710,493 23,131,480 11,565,740 5,782,870 2,891,435 8,674,306 4,337,153 13,011,460 6,505,730 3,252,865 9,758,596 4,879,298 2,439,649 7,318,948 3,659,474 1,829,737 5,489,212 2,744,606 1,372,303 4,116,910 2,058,455 6,175,366 3,087,683 9,263,050 4,631,525 13,894,576 6,947,288 3,473,644 1,736,822 868,411 2,605,234 1,302,617 3,907,852 1,953,926 976,963 2,930,890 1,465,445 4,396,336 2,198,168 1,099,084 549,542 274,771 824,314 412,157 1,236,472 618,236 309,118 154,559 463,678 231,839 695,518 347,759 1,043,278 521,639 1,564,918 782,459 2,347,378 1,173,689 3,521,068

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