λ
Math Directory

7,661,980

22 × 5 × 383099
Abundant Even Composite

7,661,980 factors as 2^2 × 5 × 383099. Its 12 positive divisors give a proper-divisor sum of 8,428,220, so this integer is abundant. The Collatz stopping time is 186 steps.

Prime Factor Structure

Factorization String 2^2 × 5 × 383099
Distinct Prime Factors 3
Square Status No
Abundance Measure Abundant

Analytical Properties

Total Divisors 12
Divisor Sum (σ) 16,090,200
Proper Divisor Sum 8,428,220
Digit Sum / Digital Root 37 (Root: 1)
Adjacent Primes #7661963 ← → #7661981

Radix Representation

Decimal 7661980
Binary 11101001110100110011100 (23 bits)
Octal 0o35164634
Hexadecimal 0x74E99C

Divisor Catalog (12)

1 2 4 5 10 20 383,099 766,198 1,532,396 1,915,495 3,830,990 7,661,980

Collatz Trajectory (186 steps to reach 1)

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

7,661,980 3,830,990 1,915,495 5,746,486 2,873,243 8,619,730 4,309,865 12,929,596 6,464,798 3,232,399 9,697,198 4,848,599 14,545,798 7,272,899 21,818,698 10,909,349 32,728,048 16,364,024 8,182,012 4,091,006 2,045,503 6,136,510 3,068,255 9,204,766 4,602,383 13,807,150 6,903,575 20,710,726 10,355,363 31,066,090 15,533,045 46,599,136 23,299,568 11,649,784 5,824,892 2,912,446 1,456,223 4,368,670 2,184,335 6,553,006 3,276,503 9,829,510 4,914,755 14,744,266 7,372,133 22,116,400 11,058,200 5,529,100 2,764,550 1,382,275 4,146,826 2,073,413 6,220,240 3,110,120 1,555,060 777,530 388,765 1,166,296 583,148 291,574

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