Properties of the Number 80018

Eighty Thousand Eighteen

Basics

Value: 80017 → 80018 → 80019

Parity: even

Prime: No

Previous Prime: 79999

Next Prime: 80021

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 2 × 40009

Divisors: 1, 2, 40009, 80018

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

8509 Try Today's Challenge

Representations

Binary: 10011100010010010

Octal: 234222

Duodecimal: 3A382

Hexadecimal: 13892

Square: 6402880324

Square Root: 282.8745304901097

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) = n⁴ + 3·n³ + 8·n² + 9·n + 2. A270868

Smallest m such that A259043(m) = n. A259046

Number of closed walks of length n in a kite graph (K4 with one edge deleted). A181626

Number of paths through an array. A6675

Triangle of coefficients of polynomials P(n; x) = Permanent(M), where M=[m(i,j)] is n X n matrix defined by m(i,j)=x if -1<=i-j<=1 else m(i,j)=1. A80018

Maximal Eulerian numbers. A6551

Triangle of labeled rooted trees according to the number of increasing edges. A67948

Triangular array T(n,k) read by rows, giving number of labeled free trees such that the root is smaller than all its children, with respect to the number n of vertices and to the number k of decreasing edges. A71208

Number of paths through an array. A6676