Properties of the Number 23890

Twenty-Three Thousand Eight Hundred Ninety

Basics

Value: 23889 → 23890 → 23891

Parity: even

Prime: No

Previous Prime: 23887

Next Prime: 23893

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 2 × 5 × 2389

Divisors: 1, 2, 5, 10, 2389, 4778, 11945, 23890

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 101110101010010

Octal: 56522

Duodecimal: 119AA

Hexadecimal: 5d52

Square: 570732100

Square Root: 154.5639026422405

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 generalized compositions of n: words b₁^i₁b₂^i₂...b_k^i_k such that b_j's and j_i's are positive integers and sum b_j*i_j = n. A129921

T(n,k) = number of (n+1) X (k+1) 0..2 arrays with no element greater than all horizontal neighbors or equal to all vertical neighbors. A239178

Number of partitions of n that contain at least one composite part. A353188

Number of (n+1)X(7+1) 0..2 arrays with no element greater than all horizontal neighbors or equal to all vertical neighbors. A239177

Number of (1+1) X (n+1) 0..2 arrays with no element greater than all horizontal neighbors or equal to all vertical neighbors. A239179

Augmentation of the triangle A055248. See Comments. A193604

Sum of digits in n-th term of A006711. A22480

Numbers n > 9 such that xⁿ + x⁹ + x⁸ + x⁷ + x⁶ + x⁵ + x⁴ + x³ + x² + x +1 is irreducible over GF(2). A57487

Sum of the nonprime divisors of n. A23890