2,500,640

2⁵ × 5 × 15629

2,500,640 has digital root 8. The neighboring primes are 2500639 and 2500651; its proper-divisor sum differs from the starting integer by 906,860.

Prime Factor Structure

Factorization String 2^5 × 5 × 15629

Distinct Prime Factors 3

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 24

Divisor Sum (σ) 5,908,140

Proper Divisor Sum 3,407,500

Digit Sum / Digital Root 17 (Root: 8)

Adjacent Primes #2500639 ← → #2500651

Radix Representation

Decimal	2500640
Binary	1001100010100000100000 (22 bits)
Octal	0o11424040
Hexadecimal	0x262820

Divisor Catalog (24)

1 2 4 5 8 10 16 20 32 40 80 160 15,629 31,258 62,516 78,145 125,032 156,290 250,064 312,580 500,128 625,160 1,250,320 2,500,640

Collatz Trajectory (81 steps to reach 1)

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

2,500,640 1,250,320 625,160 312,580 156,290 78,145 234,436 117,218 58,609 175,828 87,914 43,957 131,872 65,936 32,968 16,484 8,242 4,121 12,364 6,182 3,091 9,274 4,637 13,912 6,956 3,478 1,739 5,218 2,609 7,828 3,914 1,957 5,872 2,936 1,468 734 367 1,102 551 1,654 827 2,482 1,241 3,724 1,862 931 2,794 1,397 4,192 2,096 1,048 524 262 131 394 197 592 296 148 74

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