Properties of the Number 18326

Eighteen Thousand Three Hundred Twenty-Six

Basics

Value: 18325 → 18326 → 18327

Parity: even

Prime: No

Previous Prime: 18313

Next Prime: 18329

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 2 × 7 ² × 11 × 17

Divisors: 1, 2, 7, 11, 14, 17, 22, 34, 49, 77

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 100011110010110

Octal: 43626

Duodecimal: A732

Hexadecimal: 4796

Square: 335842276

Square Root: 135.37355724069602

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 ways to place 2 nonattacking kings on an n X n toroidal board. A179403

a(n) = (n-1)*(n+4)*(n+6)/6 for n > 1, a(1)=1. A137742

Number of ways to place 2 nonattacking knights on an n X n toroidal board. A172529

Triangle read by rows in which row n gives coefficients of polynomial R_n(y) that satisfies R_n(1/2) = 8ⁿ, where R_n(y) forms the initial (n+1) terms of g.f. A097182(y)ⁿ⁺¹. A97181

a(n) = 2^n²+n * C(n-1 + 1/2ⁿ, n) = [xⁿ] 1/(1 - 2ⁿ⁺¹*x)^1/2ⁿ. A159558

a(n) = (n-4)*(n+1)*(n+3)/6. A275874

Expansion of A(x) satisfying [xⁿ] A(x) / (1 + x·A(x)ⁿ⁺¹) = 0 for n > 0. A360583

a(n) = number of (s(0),s(1),...,s(n)) such that every s(i) is a nonnegative integer, s(0) = 1, s(n) = 5, |s(1) - s(0)| = 1, |s(i) - s(i-1)| <= 1 for i >= 2. Also a(n) = T(n,n-4), where T is the array in A026120. A26126

Number of unlabeled trivalent 3-connected bipartite planar graphs with 2n nodes without subgraphs R2 and R4. A7084

Sum of the odd parts in the partitions of n into 9 parts. A309657