Properties of the Number 23998

Twenty-Three Thousand Nine Hundred Ninety-Eight

Basics

Value: 23997 → 23998 → 23999

Parity: even

Prime: No

Previous Prime: 23993

Next Prime: 24001

Digit Sum: 31

Digital Root: 4

Palindrome: No

Factorization: 2 × 13 ² × 71

Divisors: 1, 2, 13, 26, 71, 142, 169, 338, 923, 1846

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 101110110111110

Octal: 56676

Duodecimal: 11A7A

Hexadecimal: 5dbe

Square: 575904004

Square Root: 154.91287874156882

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

a(n) = coefficient of the term that is independent of sqrt(2), sqrt(3), and sqrt(6) in the expansion of (2 + sqrt(2) + sqrt(3))ⁿ. A377109

Number of 2n-bead balanced binary strings of fundamental period 2n, rotationally equivalent to reverse. A45662

Expansion of ∏_k>0 (1 - 2·k*x^2·k)/(1 + (2·k-1)*x^2·k-1). A319860

Number of block permutations on an n-set which are uniform, i.e., corresponding blocks have same size. A23998

Irregular table read by rows: T(n,k) is the number of k-sided regions, k>=3, in a graph of n adjacent rectangles in a row with all possible diagonals drawn, as in A306302, but without the rectangles' edges which are perpendicular to the row. A369178

The Wiener index of the nanostar dendrimer defined pictorially as NS[n] in the Z. S. Irani reference. A224465