ℕ atory
Play Now

Properties of the Number 13366

Thirteen Thousand Three Hundred Sixty-Six

Basics

Value: 13365 → 13366 → 13367

Parity: even

Prime: No

Previous Prime: 13339

Next Prime: 13367

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 2 × 41 × 163

Divisors: 1, 2, 41, 82, 163, 326, 6683, 13366

Polygonal

Triangular: Yes

Square: No

Pentagonal: No

Hexagonal: Yes

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 11010000110110

Octal: 32066

Duodecimal: 789A

Hexadecimal: 3436

Square: 178649956

Square Root: 115.61141812122192

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

Triangular numbers (A000217) with prime indices. A34953
a(n) = 2·n*(4·n - 1). A14635
T(n,k)=Number of (n+2)X(k+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000001 00000011 or 00000111. A260070
Triangular numbers that are products of three distinct primes. A128896
Generalized Fibonacci numbers An,3. A6208
Triangular numbers T such that T+1 is a prime. A129545
T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with rows and columns of permanents of all 2X2 subblocks lexicographically nondecreasing, and all 2X2 permanents nonzero. A205198
The intersection of hexagonal numbers (A000384) and centered 9-gonal numbers (A060544). A272399
Even triangular numbers with prime indices. A34955
Number of cubic equations ax3 + bx2 + cx + d = 0 with integer coefficients |a|,|b|,|c|,|d| <= n, a <> 0, having three real roots, of which at least two are equal. A155192