Properties of the Number 38818

Thirty-Eight Thousand Eight Hundred Eighteen

Basics

Value: 38817 → 38818 → 38819

Parity: even

Prime: No

Previous Prime: 38803

Next Prime: 38821

Digit Sum: 28

Digital Root: 1

Palindrome: No

Factorization: 2 × 13 × 1493

Divisors: 1, 2, 13, 26, 1493, 2986, 19409, 38818

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1001011110100010

Octal: 113642

Duodecimal: 1A56A

Hexadecimal: 97a2

Square: 1506837124

Square Root: 197.02284131541703

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

T(n,k)=Number of (n+1)X(k+1) arrays of permutations of 0..(n+1)*(k+1)-1 with each element having directed index change -1,1 -1,2 1,0 or 0,-1. A264550

Column 0 of triangle A118032, where column 0 of the matrix square of A118032 forms a bisection of this sequence. A118033

a(n) = n*(4·n² - 3·n + 5)/6. A174723

Column 0 of triangle A118045; also equals a bisection of A118033, which is column 0 of A118032. A118046

a(n) = floor(sqrt(Fibonacci(n+1)) - sqrt(Fibonacci(n))). A63595

Number of (3+1)X(n+1) arrays of permutations of 0..n·4+3 with each element having directed index change -1,1 -1,2 1,0 or 0,-1. A264552

a(n) is the number of squares strictly between Fibonacci(n) and Fibonacci(n+1). A350701

Number of primes less than n·10⁹. A38818

∑_{k = 0..n} C(n, k)²*C(n+k, n)*C(n+2·k, n). A98274