Properties of the Number -18377

Eighteen Thousand Three Hundred Seventy-Seven

Basics

Value: -18378 → -18377 → -18376

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 26

Digital Root: 8

Palindrome: No

Factorization: 17 × 23 × 47

Divisors: 1, 17, 23, 47, 391, 799, 1081, 18377

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -100011111001001

Octal: -43711

Duodecimal: -A775

Hexadecimal: -47c9

Square: 337714129

Square Root: 135.56179402766844

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 reduced words of length n in the Weyl group D₄₇. A162456

T(n,k)=Number of (n+2)X(k+2) 0..3 arrays with every 3X3 subblock row and diagonal sum equal to 2 3 4 6 or 7 and every 3X3 column and antidiagonal sum not equal to 2 3 4 6 or 7. A252407

Place n points on each of the three sides of a triangle, 3n points in all; a(n) = number of nondegenerate triangles that can be constructed using these points (plus the 3 original vertices) as vertices. A130748

Numbers k such that gcd(3k,8^k+1) = 3 but k does not divide the numerator of B(2k) (the Bernoulli numbers). A70193

Values of Newton-Gregory forward interpolating polynomial (1/3)*(n-1)*(2·n+3)*(2·n-1). A30440

a(0) = 1, a(n) = 15·n² + 2 for n>0. A10005

Truncated dodecahedron, and truncated icosahedron with faces of centered polygons. A193248

G.f. = b(2)²*b(6)/(x⁷+x⁶-x⁵-x²-x+1), where b(k) = (1-x^k)/(1-x). A266335

Nonsemiprimes in A306097 = A121707 \ A267999. A321488

Number of strings of numbers x(i=1..6) in 0..n with sum i²*x(i)² equal to n²*36. A184244