Properties of the Number 18015

Eighteen Thousand Fifteen

Basics

Value: 18014 → 18015 → 18016

Parity: odd

Prime: No

Previous Prime: 18013

Next Prime: 18041

Digit Sum: 15

Digital Root: 6

Palindrome: No

Factorization: 3 × 5 × 1201

Divisors: 1, 3, 5, 15, 1201, 3603, 6005, 18015

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100011001011111

Octal: 43137

Duodecimal: A513

Hexadecimal: 465f

Square: 324540225

Square Root: 134.21996870808755

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

Floor(X/Y) where X = concatenation of the (n+1)-st even number through the (2n)-th even number and Y = concatenation of first n even numbers. A67091

Expansion of (-1 + ∏_k>=1 1 / (1 + (-x)^k))³. A341241

Expansion of ∏_k>=0 (1-x^4·k+3)^4·k+3. A285213

a(n) = Least i in range [A165598(n),A165598(n+1)] for which abs(A165597(i)) gets the maximum value in that range. A165599

Products of three distinct tribonacci numbers > 1. A274434

Constant term when a polynomial of degree n is fitted to the lower members of the first n+1 twin prime pairs. A82674

Inverse binomial transform of the Moebius sequence {μ(k), k >= 1}, A008683. A124839

Expansion of ∏_k>=0 (1 + x^4·k+3)^4·k+3. A285339

Expansion of sqrt((1-3·x) / (1-7·x)⁵). A387234

Number of 2's in n-th term of A022470. A22473