Properties of the Number 24520

Twenty-Four Thousand Five Hundred Twenty

Basics

Value: 24519 → 24520 → 24521

Parity: even

Prime: No

Previous Prime: 24517

Next Prime: 24527

Digit Sum: 13

Digital Root: 4

Palindrome: No

Factorization: 2 ³ × 5 × 613

Divisors: 1, 2, 4, 5, 8, 10, 20, 40, 613, 1226

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 101111111001000

Octal: 57710

Duodecimal: 12234

Hexadecimal: 5fc8

Square: 601230400

Square Root: 156.58863304850706

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

T(n,k)=Number of (n+1)X(k+1) 0..1 arrays x(i,j) with row sums sum{j⁴*x(i,j), j=1..k+1} nondecreasing, and column sums sum{i⁴*x(i,j), i=1..n+1} nondecreasing. A232797

Array T(n,k) = number of n X k binary matrices with rows and columns in lexicographically nondecreasing order. A180985

Triangulations of the disk, G_1,n. A210696

T(n,k)=Number of n X n 0..k arrays with rows and columns in lexicographically nondecreasing order. A229794

T(n,k)=Number of (n+1)X(k+1) 0..1 arrays x(i,j) with row sums sum{j³*x(i,j), j=1..k+1} nondecreasing, and column sums sum{i³*x(i,j), i=1..n+1} nondecreasing. A232860

Number of distinct n X n (0,1) matrices after double sorting: by row, by column, by row .. until reaching a fixed point. A89006

Generalized Stirling2 array (8,2). A92077

T(n,k) is the number of distinct n X n {0,1}-matrices that reach a fixed point after k alternately applied sorts by rows and columns, where T(n,k), k>=0 is an irregular triangle read by rows. A374525

Similar to A374525, but for each starting matrix with a choice of whether to sort by columns or rows first, such that the total number of sorting steps for this matrix is minimized. A374526

Powers of the fifth root of 9 rounded up. A18140