Properties of the Number 11440

Eleven Thousand Four Hundred Forty

Basics

Value: 11439 → 11440 → 11441

Parity: even

Prime: No

Previous Prime: 11437

Next Prime: 11443

Digit Sum: 10

Digital Root: 1

Palindrome: No

Factorization: 2 ⁴ × 5 × 11 × 13

Divisors: 1, 2, 4, 5, 8, 10, 11, 13, 16, 20

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10110010110000

Octal: 26260

Duodecimal: 6754

Hexadecimal: 2cb0

Square: 130873600

Square Root: 106.9579356569675

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

Square pyramidal numbers: a(n) = 0² + 1² + 2² + ... + n² = n*(n+1)*(2·n+1)/6. A330

a(n) = binomial coefficient C(2n, n-1). A1791

a(n) = binomial coefficient C(n,7). A580

a(n) = (n-1)*n*(n+4)/6. A5581

Number of reduced words of length n in the Weyl group D₄₀. A162402

a(n) = binomial coefficient C(n,9). A582

a(n) = binomial(n, floor((n-1)/2)). A37952

Triangle read by rows: T(n,k) = C(2·n - k,n), 0 <= k <= n. A92392

Triangle read by rows. T(n, k) = binomial(n+k-1, k) for 0 <= k <= n. A59481

Triangle in which n-th row is {binomial(n+k,k), k=0..n}, n >= 0. A46899