Properties of the Number 18276

Eighteen Thousand Two Hundred Seventy-Six

Basics

Value: 18275 → 18276 → 18277

Parity: even

Prime: No

Previous Prime: 18269

Next Prime: 18287

Digit Sum: 24

Digital Root: 6

Palindrome: No

Factorization: 2 ² × 3 × 1523

Divisors: 1, 2, 3, 4, 6, 12, 1523, 3046, 4569, 6092

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 100011101100100

Octal: 43544

Duodecimal: A6B0

Hexadecimal: 4764

Square: 334012176

Square Root: 135.1887569289695

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 Costas arrays of order n, counting rotations and flips as distinct. A8404

Numbers k such that 4^k - 3 is prime. A59266

T(n,k)=Number of nXk arrays containing k copies of 0..n-1 with every element equal to or 1 greater than any southwest or northwest neighbors modulo n and the upper left element equal to 0. A267278

Numbers k such that the three second-degree cyclotomic polynomials x² + 1, x² - x + 1 and x² + x + 1 are simultaneously prime when evaluated at x=k. A87277

a(n) is the sum of mutual Manhattan distances of the A117609(n) distinct grid points (x_i,y_i,z_i) in a cubic lattice such that x_i² + y_i² + z_i² <= n. A393008

a(n) = ∑_k=1..n (k+2)!/k! = ∑_k=1..n (k+2)*(k+1). A180118

a(n) = 288·2ⁿ - 156. A278128

Main diagonal of A332361. A332362

Centered pentagonal numbers that are abundant. A382696

a(n) = a(n-1) + a(n - 1 minus the number of terms of a(k) == (mod 6) so far). A60733