Properties of the Number 84180

Eighty-Four Thousand One Hundred Eighty

Basics

Value: 84179 → 84180 → 84181

Parity: even

Prime: No

Previous Prime: 84179

Next Prime: 84181

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 2 ² × 3 × 5 × 23 × 61

Divisors: 1, 2, 3, 4, 5, 6, 10, 12, 15, 20

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10100100011010100

Octal: 244324

Duodecimal: 40870

Hexadecimal: 148d4

Square: 7086272400

Square Root: 290.1378982484019

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

Integers that are Rhonda numbers to base 8. A100970

T(n,k)=Number of nXk 0..4 arrays with each element·equal to the number of its horizontal and vertical neighbors equal to 3,1,0,2,4 for x=0,1,2,3,4. A196856

T(n,k)=Number of nXk 0..4 arrays with each element·equal to the number of its horizontal and vertical neighbors equal to 4,1,0,2,3 for x=0,1,2,3,4. A196950

Number of n X 2 0..4 arrays with each element·equal to the number its horizontal and vertical neighbors equal to 3,1,0,2,4 for x=0,1,2,3,4. A196850

E.g.f. A(x) satisfies A(x) = 1 + x·A(2·log(1+x)). A355124

Duplicate of A020988. A84180