Properties of the Number 18527

Eighteen Thousand Five Hundred Twenty-Seven

Basics

Value: 18526 → 18527 → 18528

Parity: odd

Prime: No

Previous Prime: 18523

Next Prime: 18539

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 97 × 191

Divisors: 1, 97, 191, 18527

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 100100001011111

Octal: 44137

Duodecimal: A87B

Hexadecimal: 485f

Square: 343249729

Square Root: 136.11392287345186

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) 0..2 arrays with the maximum plus the lower median minus the minimum of every 2X2 subblock equal. A236819

a(n) = A273059(4n+3). A275919

a(n) = smallest multiple of prime(n) such that a(n) +1 is a multiple of prime(n+1). A77338

Numbers k such that σ(φ(k))-φ(σ(k)) is nonzero and is divisible by (k+1), that is A065395(k)/(k+1) = (φ(σ(k))-σ(φ(k)))/(k+1) is a nonzero integer. A92586

Numbers of the form p·q, p and q prime with q=2p-3. A226755

Number of permutations of length n which avoid the patterns 312, 1324, 3421; or avoid the patterns 312, 1324, 2341, etc. A116722

A156977/3. A164565

Number of (n+1)X(1+1) 0..2 arrays with the maximum plus the lower median minus the minimum of every 2X2 subblock equal. A236812

Number of (n+1)X(5+1) 0..2 arrays with the maximum plus the lower median minus the minimum of every 2X2 subblock equal. A236816

Least k such that A000790(k) = A108574(n). A326610