Properties of the Number 22390

Twenty-Two Thousand Three Hundred Ninety

Basics

Value: 22389 → 22390 → 22391

Parity: even

Prime: No

Previous Prime: 22381

Next Prime: 22391

Digit Sum: 16

Digital Root: 7

Palindrome: No

Factorization: 2 × 5 × 2239

Divisors: 1, 2, 5, 10, 2239, 4478, 11195, 22390

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 101011101110110

Octal: 53566

Duodecimal: 10B5A

Hexadecimal: 5776

Square: 501312100

Square Root: 149.63288408635316

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

Largest terms a(n) forming a self-convolution of an integer sequence (A132832) such that: a(n) <= 2·a(n-1) for n>0 with a(0)=1. A132831

Expansion of the g.f. A(x) with the property that the sum of the first n coefficients in A(x/n)ⁿ equals n for n >= 1. A375457

Denominators of continued fraction convergents to sqrt(239). A41447

a(n) = 9·a(n-2) - 4·a(n-3) for n > 2 with a(0)=1, a(1)=2. A122109

Number of 0..n arrays x(0..4) of 5 elements with each no smaller than the sum of its two previous neighbors modulo (n+1). A207102

Numbers m such that σ(m) = τ(m)! where σ(k) = A000203(k) and τ(k) = A000005(k). A351866

Fibonacci sequence beginning 8, 17. A22390

Expansion of g.f. A(x) satisfying [xⁿ] x·A'(x) / (1 - n·A(x)) = nⁿ for n >= 1. A375452