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Properties of the Number 23920

Twenty-Three Thousand Nine Hundred Twenty

Basics

Value: 23919 → 23920 → 23921

Parity: even

Prime: No

Previous Prime: 23917

Next Prime: 23929

Digit Sum: 16

Digital Root: 7

Palindrome: No

Factorization: 2 4 × 5 × 13 × 23

Divisors: 1, 2, 4, 5, 8, 10, 13, 16, 20, 23

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 101110101110000

Octal: 56560

Duodecimal: 11A14

Hexadecimal: 5d70

Square: 572166400

Square Root: 154.66091943344964

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

Number of pentagonal regions in regular n-gon with all diagonals drawn. A67152
Number of polyhexes with n cells that tile the plane by translation. A75207
Number of binary words of length n that are not "bifix-free". A94536
T(n,k) = Number of n X k 0..4 arrays with the absolute differences of each element with its with horizontal and vertical neighbors unique. A265973
T(n,k)=Number of nXk 0..4 arrays with each element·equal to the number of its horizontal and vertical neighbors equal to 3,2,0,4,1 for x=0,1,2,3,4. A196802
Sum of the prime parts in the partitions of n into 7 parts. A309468
Number of integer partitions of n whose multiplicities appear with relatively prime multiplicities. A319160
Triangle, read by rows, where T(n,k) equals the dot product of the vector of terms in row n that are to the right of T(n,k) with the vector of terms in column k that are above T(n,k) for n>k+1>0, with the odd numbers in the secondary diagonal and all 1's in the main diagonal. A128320
Column 2 of triangle A128320. A128323
Triangle of coefficients of polynomials v(n,x) jointly generated with A210753; see the Formula section. A210754