Properties of the Number 27261

Twenty-Seven Thousand Two Hundred Sixty-One

Basics

Value: 27260 → 27261 → 27262

Parity: odd

Prime: No

Previous Prime: 27259

Next Prime: 27271

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 13 × 233

Divisors: 1, 3, 9, 13, 39, 117, 233, 699, 2097, 3029

Polygonal

Triangular: Yes

Square: No

Pentagonal: No

Hexagonal: Yes

Heptagonal: No

Tetrahedral: No

Today's Target

2730 Try Today's Challenge

Representations

Binary: 110101001111101

Octal: 65175

Duodecimal: 13939

Hexadecimal: 6a7d

Square: 743162121

Square Root: 165.10905486980417

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) = binomial(Fibonacci(n) + 1, 2). A33192

A binomial recursion : a(n) = q(n) (see formula). A135075

Triangular numbers which are sums of three consecutive primes. A167788

Pseudoprimes to base 8 that are not squarefree. A243090

Triangular numbers t such that t+10 is a prime. A129755

Odd triangular numbers with prime indices. A34954

Triangular numbers which are the sum of two squares. A73613

Smith triangular numbers. A98840

Triangular numbers p*(p+1)/2 with p prime such that 1+(number of prime factors of p+1) is prime. A144549

a(n) = floor((3rd elementary symmetric function of 2,3,...,n+3)/(2+3+...+n+3)). A24178