4,020,770

2 × 5 × 13 × 157 × 197

Starting at 4,020,770, the Collatz iteration reaches 1 after 185 steps. The first transition is 2010385; the starting value is even with 32 positive divisors.

Prime Factor Structure

Factorization String 2 × 5 × 13 × 157 × 197

Distinct Prime Factors 5

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 32

Divisor Sum (σ) 7,883,568

Proper Divisor Sum 3,862,798

Digit Sum / Digital Root 20 (Root: 2)

Adjacent Primes #4020749 ← → #4020773

Radix Representation

Decimal	4020770
Binary	1111010101101000100010 (22 bits)
Octal	0o17255042
Hexadecimal	0x3D5A22

Divisor Catalog (32)

1 2 5 10 13 26 65 130 157 197 314 394 785 985 1,570 1,970 2,041 2,561 4,082 5,122 10,205 12,805 20,410 25,610 30,929 61,858 154,645 309,290 402,077 804,154 2,010,385 4,020,770

Collatz Trajectory (185 steps to reach 1)

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

4,020,770 2,010,385 6,031,156 3,015,578 1,507,789 4,523,368 2,261,684 1,130,842 565,421 1,696,264 848,132 424,066 212,033 636,100 318,050 159,025 477,076 238,538 119,269 357,808 178,904 89,452 44,726 22,363 67,090 33,545 100,636 50,318 25,159 75,478 37,739 113,218 56,609 169,828 84,914 42,457 127,372 63,686 31,843 95,530 47,765 143,296 71,648 35,824 17,912 8,956 4,478 2,239 6,718 3,359 10,078 5,039 15,118 7,559 22,678 11,339 34,018 17,009 51,028 25,514

← Previous Integer #4,020,769 Browse Full Index Next Integer #4,020,771 →