Properties of the Number 27243

Twenty-Seven Thousand Two Hundred Forty-Three

Basics

Value: 27242 → 27243 → 27244

Parity: odd

Prime: No

Previous Prime: 27241

Next Prime: 27253

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 3 ³ × 1009

Divisors: 1, 3, 9, 27, 1009, 3027, 9081, 27243

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110101001101011

Octal: 65153

Duodecimal: 13923

Hexadecimal: 6a6b

Square: 742181049

Square Root: 165.05453644174705

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

Numbers k such that 7·4^k + 1 is prime. A2255

a(n) is the concatenation of n and 9n. A9474

Difference between the number of primes with n digits (A006879) and the nearest integer to F[4n](S(n)), where F[4n](x) are Fibonacci polynomials and S(n) = ∑_i=0..3 (C(i)*(log(log(A*(B+n²))))ⁱ) (see A228063). A228064

Number of permutations of [n] having exactly 6 strong fixed blocks. A225967

Number of n X n symmetric binary matrices with each 1 adjacent to no more than 5 knight-move neighboring 1s. A191573

a(n) = ∑_k=0..n (k+1) * A026769(n, k). A27243