Properties of the Number 20184

Twenty Thousand One Hundred Eighty-Four

Basics

Value: 20183 → 20184 → 20185

Parity: even

Prime: No

Previous Prime: 20183

Next Prime: 20201

Digit Sum: 15

Digital Root: 6

Palindrome: No

Factorization: 2 ³ × 3 × 29 ²

Divisors: 1, 2, 3, 4, 6, 8, 12, 24, 29, 58

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100111011011000

Octal: 47330

Duodecimal: B820

Hexadecimal: 4ed8

Square: 407393856

Square Root: 142.07040508142433

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

a(n) = 24·n². A195824

Smallest area of triangle with integer sides and area = n times perimeter. A289155

Triangular sequence defined by T(n, m) = (r^n-m*q^m + r^m*q^n-m)*b(n), where b(n) = coefficients of p(x, n) = 2ⁿ*(1-x)ⁿ⁺¹ * LerchPhi(x, -n, 1/2), and r=2, q=1. A154695

Row sums of triangle A067979; also of triangle A067990. A67989

Expansion of (1-2x-3x²)/((1-2x)(1+4x)(1-8x)). A122910

Expansion of ( f(-q)¹² + 22·q * f(-q)⁶ * f(-q⁵)⁶ + 125·q² * f(-q⁵)¹² ) / (f(-q) * f(-q⁵))² in powers of q where f() is a Ramanujan θ function. A235870

a(n) is the total surface area of a hollow cubic block (defined as a block with a shell thickness of 1 cube) where n is the edge length of the removed volume. A309842

G.f. A(x) satisfies: A(x)⁴ = A(x²)² + 8·x. A228711

G.f. A(x) satisfies: A(x)² = A( x²/(1 - 4·x - 2·x²) ). A274483

Pseudoprimes to base 56. A20184