Properties of the Number 40248

Forty Thousand Two Hundred Forty-Eight

Basics

Value: 40247 → 40248 → 40249

Parity: even

Prime: No

Previous Prime: 40241

Next Prime: 40253

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 2 ³ × 3 ² × 13 × 43

Divisors: 1, 2, 3, 4, 6, 8, 9, 12, 13, 18

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1001110100111000

Octal: 116470

Duodecimal: 1B360

Hexadecimal: 9d38

Square: 1619901504

Square Root: 200.61904196760585

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) = 441·n² - 394·n + 88. A157734

Sum of primes in n-th shell of prime spiral. A53997

Number of 2Xn 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 0, 2 or 3 neighboring 1s. A297638

a(n) = largest m such that ∑_k=0..m 1/(mk+1) < 2Pi. A195914

a(n) is a number of lattice points in 3D Cartesian grid between cube with edge length 2·n centered in origin and its inscribed sphere. Three pairs of the cube's faces are parallel to the planes XOY, XOZ, YOZ respectively. A303743

Irregular triangle read by rows: T(n,k) is the number of distinct tilings by squares of an n X n square lattice that contain k nodes unconnected to any of their neighbors. A226997

Continued fraction for sqrt(265). A40248

Number of 2Xn integer arrays with each element equal to the number of horizontal, diagonal and antidiagonal neighbors less than itself. A265982

The number of even separable permutations of length n. A165328