Properties of the Number 13485

Thirteen Thousand Four Hundred Eighty-Five

Basics

Value: 13484 → 13485 → 13486

Parity: odd

Prime: No

Previous Prime: 13477

Next Prime: 13487

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 3 × 5 × 29 × 31

Divisors: 1, 3, 5, 15, 29, 31, 87, 93, 145, 155

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

603 Try Today's Challenge

Representations

Binary: 11010010101101

Octal: 32255

Duodecimal: 7979

Hexadecimal: 34ad

Square: 181845225

Square Root: 116.12493272333896

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) = n*(n+1)*(n+2)/2. A27480

Distinct odd numbers in the triangle of denominators in Leibniz's Harmonic Triangle. A46201

Expansion of 1/(1 - x + 4·x²). A106853

3 times 13-gonal (or tridecagonal) numbers: a(n) = 3·n*(11·n - 9)/2. A153875

Numbers k such that 6·k+1, 6·k+7, 6·k+13, 6·k+19 are consecutive primes. A90839

a(n) = n*(n² - 1)/2. A135503

Expansion of o.g.f. (1-x)⁵/((1-x)⁵ - x⁴). A368475

Numbers n such that 6n+5, 6n+11, 6n+17, 6n+23 are consecutive primes or 6n+1, 6n+7, 6n+13, 6n+19 are consecutive primes. A90833

Denominator of c(n) = (n²+n+2)/((n+1)*(n+2)*(n+3)). A241269

a(n) = n*(2·n-1)*(2·n+1). A35328