7,515,020

2² × 5 × 17 × 23 × 31²

7,515,020 is even and not a perfect square. Its factorization is 2^2 × 5 × 17 × 23 × 31^2 and its 72 divisors sum to 18,016,992.

Prime Factor Structure

Factorization String 2^2 × 5 × 17 × 23 × 31^2

Distinct Prime Factors 5

Square Status No

Abundance Measure Abundant

Total Divisors 72

Divisor Sum (σ) 18,016,992

Proper Divisor Sum 10,501,972

Digit Sum / Digital Root 20 (Root: 2)

Adjacent Primes #7515019 ← → #7515041

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

7,515,020 3,757,510 1,878,755 5,636,266 2,818,133 8,454,400 4,227,200 2,113,600 1,056,800 528,400 264,200 132,100 66,050 33,025 99,076 49,538 24,769 74,308 37,154 18,577 55,732 27,866 13,933 41,800 20,900 10,450 5,225 15,676 7,838 3,919 11,758 5,879 17,638 8,819 26,458 13,229 39,688 19,844 9,922 4,961 14,884 7,442 3,721 11,164 5,582 2,791 8,374 4,187 12,562 6,281 18,844 9,422 4,711 14,134 7,067 21,202 10,601 31,804 15,902 7,951