Properties of the Number 27279

Twenty-Seven Thousand Two Hundred Seventy-Nine

Basics

Value: 27278 → 27279 → 27280

Parity: odd

Prime: No

Previous Prime: 27277

Next Prime: 27281

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 7 × 433

Divisors: 1, 3, 7, 9, 21, 63, 433, 1299, 3031, 3897

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110101010001111

Octal: 65217

Duodecimal: 13953

Hexadecimal: 6a8f

Square: 744143841

Square Root: 165.16355530200966

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

Sum of the squarefree parts of the partitions of n into 7 parts. A309482

Consider the morphism 1->{1,2}, 2->{1,3}, 3->{1}; a(n) is the total number of '3' after n substitutions. A103685

a(n) = a(1) + a(2) + ... + a(n-1) - a(m) for n >= 4, where m = 2^p+1 + 2 - n and p is the smallest integer such that 2^p < n - 1 <= 2^p+1, starting with a(1) = 1, a(2) = 2, and a(3) = 3. A49909

a(n) = ∑_k=0..2n-2 T(n,k) * T(n,k+2), with T given by A026568. A27279