Properties of the Number 40418

Forty Thousand Four Hundred Eighteen

Basics

Value: 40417 → 40418 → 40419

Parity: even

Prime: No

Previous Prime: 40387

Next Prime: 40423

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 2 × 7 × 2887

Divisors: 1, 2, 7, 14, 2887, 5774, 20209, 40418

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

603 Try Today's Challenge

Representations

Binary: 1001110111100010

Octal: 116742

Duodecimal: 1B482

Hexadecimal: 9de2

Square: 1633614724

Square Root: 201.04228410958726

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

T(n,k)=Number of nXk 0..2 arrays with no element equal to one or three horizontal or vertical neighbors, with new values 0..2 introduced in row major order. A241108

Smallest sequence which lists the position of digits "3" in the sequence. A167453

G.f. A(x) satisfies A(x) = sqrt( (1 + 2·x) * (1 + 2·x*A(x)) ). A379326

Number of n X 3 0..2 arrays with no element equal to one or three horizontal or vertical neighbors, with new values 0..2 introduced in row major order. A241103

Number of nX7 0..2 arrays with no element equal to one or three horizontal or vertical neighbors, with new values 0..2 introduced in row major order. A241107

a(n) = A000037(n)³. A179125

Continued fraction for sqrt(439). A40418

A symmetrical triangle sequence made from A154537:q(x,n)= Sum[(2·m + 1)ⁿ*x^m/m!, {m, 0, Infinity}]/(Exp[x]); p(x,n)=q(x,n)+xⁿ*q(1/x,n); t(n,m)=coefficients(p(x,n)). A154923

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