Properties of the Number 27982

Twenty-Seven Thousand Nine Hundred Eighty-Two

Basics

Value: 27981 → 27982 → 27983

Parity: even

Prime: No

Previous Prime: 27967

Next Prime: 27983

Digit Sum: 28

Digital Root: 1

Palindrome: No

Factorization: 2 × 17 × 823

Divisors: 1, 2, 17, 34, 823, 1646, 13991, 27982

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 110110101001110

Octal: 66516

Duodecimal: 1423A

Hexadecimal: 6d4e

Square: 782992324

Square Root: 167.27821137255145

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

Total number of left truncatable primes (without zeros) in base n. A76623

Let M(n) be the n X n matrix m(i,j)=min(i,j) for 1<=i,j<=n then a(n) is the trace of M(n)^-6. A114358

Expansion of ∏_k>=1 ((1 + x^k³)/(1 - x^k³))^k³. A291721

The internal state of the Sinclair ZX81 and Spectrum random number generator. A357907

Expansion of ( 5-9·x²-2·x³ ) / ( (1+x-x²)*(1-x-x²-x³) ). A190914

Number of (w,x,y) with all terms in {0,...,n} and 2*|w-x| > max(w,x,y) - min(w,x,y). A213045

Number of -3..3 arrays x(i) of n+1 elements i=1..n+1 with set{t,u,v in 0,1}((x[i+t]+x[j+u]+x[k+v])*(-1)^t+u+v) having four, five, six or eight distinct values for every i,j,k<=n. A211751

Number of nX3 arrays of the minimum value of corresponding elements and their horizontal, vertical or diagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and nonincreasing columns, 0..2 nX3 array. A219811

Multiplicity of highest weight (or singular) vectors associated with character chi₂₃ of Monster module. A34411

Numbers k such that 609·10^k - 1 is prime. A108320