Properties of the Number 22685

Twenty-Two Thousand Six Hundred Eighty-Five

Basics

Value: 22684 → 22685 → 22686

Parity: odd

Prime: No

Previous Prime: 22679

Next Prime: 22691

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 5 × 13 × 349

Divisors: 1, 5, 13, 65, 349, 1745, 4537, 22685

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 101100010011101

Octal: 54235

Duodecimal: 11165

Hexadecimal: 589d

Square: 514609225

Square Root: 150.6154042586614

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

Number of partitions of n having an integer median. A325347

a(n) = 169·n² - 140·n + 29. A156639

Positive numbers y such that y² is of the form x²+(x+167)² with integer x. A159777

a(n) = a(n-1) + a(round(2*(n-1)/3)) + a(round((n-1)/3)) with a(1)=a(2)=1. A33499

Triangle of coefficients of polynomials u(n,x) jointly generated with A209768; see the Formula section. A209767

Least number m such that 4·m² + 1 is prime and the next prime of this form is 4*(m + A214518(n))² + 1. A214519

Triangle, read by rows, where the n-th row lists the (n²+1) coefficients of (1+2·x+...+(n+1)*xⁿ)ⁿ. A329709

a(n) = ∑_{-n<i<n, -n<j<n, gcd{i,j}=2} (n-|i|)*(n-|j|)/8. A331773

Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 361", based on the 5-celled von Neumann neighborhood. A271416

Expansion of ∑_n>=1 q^n*(n-1) / (1-q)ⁿ. A321481