Properties of the Number 9520

Nine Thousand Five Hundred Twenty

Basics

Value: 9519 → 9520 → 9521

Parity: even

Prime: No

Previous Prime: 9511

Next Prime: 9521

Digit Sum: 16

Digital Root: 7

Palindrome: No

Factorization: 2 ⁴ × 5 × 7 × 17

Divisors: 1, 2, 4, 5, 7, 8, 10, 14, 16, 17

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10010100110000

Octal: 22460

Duodecimal: 5614

Hexadecimal: 2530

Square: 90630400

Square Root: 97.57048734120374

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: No

Perfect Number: No

Special

Kaprekar Constant: No

Munchausen Constant: No

Armstrong Number: No

Kaprekar Number: No

Catalan Number: No

Vampire Number: No

Taxicab Number: No

Super Prime: No

Friedman Number: No

Fermat Number: No

Cullen Number: No

OEIS Sequences

Total number of possible knight moves on an (n+2) X (n+2) chessboard, if the knight is placed anywhere. A35008

Four times pentagonal numbers: a(n) = 2·n*(3·n-1). A33579

9-gonal (or enneagonal) pyramidal numbers: a(n) = n*(n+1)*(7·n-4)/6. A7584

a(n) = n*(n+1)*(n+2)*(n+3)/6. A33488

Numbers of the form p⁴*q·r*s where p, q, r, and s are distinct primes. A179693

T(n,k)=Number of nXk 0..1 arrays with no 1 equal to more than one of its horizontal, diagonal and antidiagonal neighbors, with the exception of exactly two elements. A283634

Smaller of bi-unitary amicable pair. A292980

Binary encoding of quadratic residue set of n. L(1/n) is the most significant bit, L(n-1/n) is the least significant bit, i.e., the rows of A055088 interpreted as binary numbers. A55094

T(n,k)=Number of nXk 0,1 arrays with the row and column sums nondecreasing. A202560

Sum of the denominators of the Farey series of order n (A006843). A240877